Finding the Fourth Proportional to 99,494.48, 148,513.78 and 87,685.04

Step by Step Solution

1. Step 1: Write the proportion equation
   99,494.48 : 148,513.78 = 87,685.04 : x
2. Step 2: Convert to fraction form
   99,494.48/148,513.78 = 87,685.04/x
3. Step 3: Cross multiply
   99,494.48x = 148,513.78 × 87,685.04
4. Step 4: Simplify right side
   99,494.48x = 13,022,436,739.85
5. Step 5: Solve for x
   x = 13,022,436,739.85/99,494.48
6. Step 6: Final answer
   x = 130,886.02