Finding the Fourth Proportional to 99,469.92, 149,209.84 and 28,403.10

Step by Step Solution

1. Step 1: Write the proportion equation
   99,469.92 : 149,209.84 = 28,403.10 : x
2. Step 2: Convert to fraction form
   99,469.92/149,209.84 = 28,403.10/x
3. Step 3: Cross multiply
   99,469.92x = 149,209.84 × 28,403.10
4. Step 4: Simplify right side
   99,469.92x = 4,238,022,006.50
5. Step 5: Solve for x
   x = 4,238,022,006.50/99,469.92
6. Step 6: Final answer
   x = 42,606.07