Finding the Fourth Proportional to 99,678.15, 149,484.71 and 33,100.40

Step by Step Solution

1. Step 1: Write the proportion equation
   99,678.15 : 149,484.71 = 33,100.40 : x
2. Step 2: Convert to fraction form
   99,678.15/149,484.71 = 33,100.40/x
3. Step 3: Cross multiply
   99,678.15x = 149,484.71 × 33,100.40
4. Step 4: Simplify right side
   99,678.15x = 4,948,002,781.96
5. Step 5: Solve for x
   x = 4,948,002,781.96/99,678.15
6. Step 6: Final answer
   x = 49,639.79