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Finding the Fourth Proportional to 88,399.20, 132,339.60 and 78,031.20

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Solution

The fourth proportional to 88,399.20, 132,339.60 and 78,031.20 is: 116,818.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,399.20 : 132,339.60 = 78,031.20 : x
  2. Step 2: Convert to fraction form
    88,399.20/132,339.60 = 78,031.20/x
  3. Step 3: Cross multiply
    88,399.20x = 132,339.60 × 78,031.20
  4. Step 4: Simplify right side
    88,399.20x = 10,326,617,795.52
  5. Step 5: Solve for x
    x = 10,326,617,795.52/88,399.20
  6. Step 6: Final answer
    x = 116,818.00

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