Finding the Fourth Proportional to 99,099.88, 148,672.50 and 42,949.39

Step by Step Solution

1. Step 1: Write the proportion equation
   99,099.88 : 148,672.50 = 42,949.39 : x
2. Step 2: Convert to fraction form
   99,099.88/148,672.50 = 42,949.39/x
3. Step 3: Cross multiply
   99,099.88x = 148,672.50 × 42,949.39
4. Step 4: Simplify right side
   99,099.88x = 6,385,393,184.78
5. Step 5: Solve for x
   x = 6,385,393,184.78/99,099.88
6. Step 6: Final answer
   x = 64,433.91