Finding the Fourth Proportional to 60,980.91, 91,470.84 and 47,665.10

Step by Step Solution

1. Step 1: Write the proportion equation
   60,980.91 : 91,470.84 = 47,665.10 : x
2. Step 2: Convert to fraction form
   60,980.91/91,470.84 = 47,665.10/x
3. Step 3: Cross multiply
   60,980.91x = 91,470.84 × 47,665.10
4. Step 4: Simplify right side
   60,980.91x = 4,359,966,785.62
5. Step 5: Solve for x
   x = 4,359,966,785.62/60,980.91
6. Step 6: Final answer
   x = 71,497.24