Finding the Fourth Proportional to 111,155.68, 153,380.55 and 63,406.18

Step by Step Solution

1. Step 1: Write the proportion equation
   111,155.68 : 153,380.55 = 63,406.18 : x
2. Step 2: Convert to fraction form
   111,155.68/153,380.55 = 63,406.18/x
3. Step 3: Cross multiply
   111,155.68x = 153,380.55 × 63,406.18
4. Step 4: Simplify right side
   111,155.68x = 9,725,274,761.80
5. Step 5: Solve for x
   x = 9,725,274,761.80/111,155.68
6. Step 6: Final answer
   x = 87,492.38