Finding the Fourth Proportional to 99,758.98, 148,908.61 and 87,949.54

Step by Step Solution

1. Step 1: Write the proportion equation
   99,758.98 : 148,908.61 = 87,949.54 : x
2. Step 2: Convert to fraction form
   99,758.98/148,908.61 = 87,949.54/x
3. Step 3: Cross multiply
   99,758.98x = 148,908.61 × 87,949.54
4. Step 4: Simplify right side
   99,758.98x = 13,096,443,751.54
5. Step 5: Solve for x
   x = 13,096,443,751.54/99,758.98
6. Step 6: Final answer
   x = 131,280.85