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Finding the Fourth Proportional to 118,702.68, 163,811.64 and 64,986.78

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Solution

The fourth proportional to 118,702.68, 163,811.64 and 64,986.78 is: 89,682.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,702.68 : 163,811.64 = 64,986.78 : x
  2. Step 2: Convert to fraction form
    118,702.68/163,811.64 = 64,986.78/x
  3. Step 3: Cross multiply
    118,702.68x = 163,811.64 × 64,986.78
  4. Step 4: Simplify right side
    118,702.68x = 10,645,591,010.12
  5. Step 5: Solve for x
    x = 10,645,591,010.12/118,702.68
  6. Step 6: Final answer
    x = 89,682.82

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