Finding the Fourth Proportional to 99,612.34, 149,104.35 and 64,025.89

Step by Step Solution

1. Step 1: Write the proportion equation
   99,612.34 : 149,104.35 = 64,025.89 : x
2. Step 2: Convert to fraction form
   99,612.34/149,104.35 = 64,025.89/x
3. Step 3: Cross multiply
   99,612.34x = 149,104.35 × 64,025.89
4. Step 4: Simplify right side
   99,612.34x = 9,546,538,711.62
5. Step 5: Solve for x
   x = 9,546,538,711.62/99,612.34
6. Step 6: Final answer
   x = 95,836.91