Finding the Fourth Proportional to 99,417.72, 149,375.69 and 93,439

Step by Step Solution

1. Step 1: Write the proportion equation
   99,417.72 : 149,375.69 = 93,439 : x
2. Step 2: Convert to fraction form
   99,417.72/149,375.69 = 93,439/x
3. Step 3: Cross multiply
   99,417.72x = 149,375.69 × 93,439
4. Step 4: Simplify right side
   99,417.72x = 13,957,515,097.91
5. Step 5: Solve for x
   x = 13,957,515,097.91/99,417.72
6. Step 6: Final answer
   x = 140,392.63