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Finding the Fourth Proportional to 77,700.49, 116,772.86 and 72,435.31

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Solution

The fourth proportional to 77,700.49, 116,772.86 and 72,435.31 is: 108,860.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,700.49 : 116,772.86 = 72,435.31 : x
  2. Step 2: Convert to fraction form
    77,700.49/116,772.86 = 72,435.31/x
  3. Step 3: Cross multiply
    77,700.49x = 116,772.86 × 72,435.31
  4. Step 4: Simplify right side
    77,700.49x = 8,458,478,313.69
  5. Step 5: Solve for x
    x = 8,458,478,313.69/77,700.49
  6. Step 6: Final answer
    x = 108,860.04

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