Finding the Fourth Proportional to 77,572.71, 107,061.92 and 47,375.40

Step by Step Solution

1. Step 1: Write the proportion equation
   77,572.71 : 107,061.92 = 47,375.40 : x
2. Step 2: Convert to fraction form
   77,572.71/107,061.92 = 47,375.40/x
3. Step 3: Cross multiply
   77,572.71x = 107,061.92 × 47,375.40
4. Step 4: Simplify right side
   77,572.71x = 5,072,101,047.89
5. Step 5: Solve for x
   x = 5,072,101,047.89/77,572.71
6. Step 6: Final answer
   x = 65,385.12