Finding the Fourth Proportional to 99,077.62, 148,614.72 and 39,911.78

Step by Step Solution

1. Step 1: Write the proportion equation
   99,077.62 : 148,614.72 = 39,911.78 : x
2. Step 2: Convert to fraction form
   99,077.62/148,614.72 = 39,911.78/x
3. Step 3: Cross multiply
   99,077.62x = 148,614.72 × 39,911.78
4. Step 4: Simplify right side
   99,077.62x = 5,931,478,009.40
5. Step 5: Solve for x
   x = 5,931,478,009.40/99,077.62
6. Step 6: Final answer
   x = 59,866.98