Finding the Fourth Proportional to 181,155.46, 249,989.78 and 100,580.91

Step by Step Solution

1. Step 1: Write the proportion equation
   181,155.46 : 249,989.78 = 100,580.91 : x
2. Step 2: Convert to fraction form
   181,155.46/249,989.78 = 100,580.91/x
3. Step 3: Cross multiply
   181,155.46x = 249,989.78 × 100,580.91
4. Step 4: Simplify right side
   181,155.46x = 25,144,200,420.61
5. Step 5: Solve for x
   x = 25,144,200,420.61/181,155.46
6. Step 6: Final answer
   x = 138,799.02