Finding the Fourth Proportional to 101,792.72, 140,474.32 and 56,471.60

Step by Step Solution

1. Step 1: Write the proportion equation
   101,792.72 : 140,474.32 = 56,471.60 : x
2. Step 2: Convert to fraction form
   101,792.72/140,474.32 = 56,471.60/x
3. Step 3: Cross multiply
   101,792.72x = 140,474.32 × 56,471.60
4. Step 4: Simplify right side
   101,792.72x = 7,932,809,609.31
5. Step 5: Solve for x
   x = 7,932,809,609.31/101,792.72
6. Step 6: Final answer
   x = 77,931.01