Finding the Fourth Proportional to 99,757.98, 148,907.12 and 87,948.54

Step by Step Solution

1. Step 1: Write the proportion equation
   99,757.98 : 148,907.12 = 87,948.54 : x
2. Step 2: Convert to fraction form
   99,757.98/148,907.12 = 87,948.54/x
3. Step 3: Cross multiply
   99,757.98x = 148,907.12 × 87,948.54
4. Step 4: Simplify right side
   99,757.98x = 13,096,163,359.86
5. Step 5: Solve for x
   x = 13,096,163,359.86/99,757.98
6. Step 6: Final answer
   x = 131,279.36