Finding the Fourth Proportional to 100,772.24, 139,061.52 and 54,832.07

Step by Step Solution

1. Step 1: Write the proportion equation
   100,772.24 : 139,061.52 = 54,832.07 : x
2. Step 2: Convert to fraction form
   100,772.24/139,061.52 = 54,832.07/x
3. Step 3: Cross multiply
   100,772.24x = 139,061.52 × 54,832.07
4. Step 4: Simplify right side
   100,772.24x = 7,625,030,724.79
5. Step 5: Solve for x
   x = 7,625,030,724.79/100,772.24
6. Step 6: Final answer
   x = 75,665.98