Finding the Fourth Proportional to 113,916.78, 157,205.61 and 63,615.78

Step by Step Solution

1. Step 1: Write the proportion equation
   113,916.78 : 157,205.61 = 63,615.78 : x
2. Step 2: Convert to fraction form
   113,916.78/157,205.61 = 63,615.78/x
3. Step 3: Cross multiply
   113,916.78x = 157,205.61 × 63,615.78
4. Step 4: Simplify right side
   113,916.78x = 10,000,757,500.53
5. Step 5: Solve for x
   x = 10,000,757,500.53/113,916.78
6. Step 6: Final answer
   x = 87,790.03