Finding the Fourth Proportional to 99,012.68, 148,459.71 and 31,515.56

Step by Step Solution

1. Step 1: Write the proportion equation
   99,012.68 : 148,459.71 = 31,515.56 : x
2. Step 2: Convert to fraction form
   99,012.68/148,459.71 = 31,515.56/x
3. Step 3: Cross multiply
   99,012.68x = 148,459.71 × 31,515.56
4. Step 4: Simplify right side
   99,012.68x = 4,678,791,665.78
5. Step 5: Solve for x
   x = 4,678,791,665.78/99,012.68
6. Step 6: Final answer
   x = 47,254.47