Finding the Fourth Proportional to 99,659.75, 149,490.17 and 25,787.75

Step by Step Solution

1. Step 1: Write the proportion equation
   99,659.75 : 149,490.17 = 25,787.75 : x
2. Step 2: Convert to fraction form
   99,659.75/149,490.17 = 25,787.75/x
3. Step 3: Cross multiply
   99,659.75x = 149,490.17 × 25,787.75
4. Step 4: Simplify right side
   99,659.75x = 3,855,015,131.42
5. Step 5: Solve for x
   x = 3,855,015,131.42/99,659.75
6. Step 6: Final answer
   x = 38,681.77