Finding the Fourth Proportional to 152,105.04, 226,787.58 and 139,458.78

Step by Step Solution

1. Step 1: Write the proportion equation
   152,105.04 : 226,787.58 = 139,458.78 : x
2. Step 2: Convert to fraction form
   152,105.04/226,787.58 = 139,458.78/x
3. Step 3: Cross multiply
   152,105.04x = 226,787.58 × 139,458.78
4. Step 4: Simplify right side
   152,105.04x = 31,627,519,225.95
5. Step 5: Solve for x
   x = 31,627,519,225.95/152,105.04
6. Step 6: Final answer
   x = 207,932.09