Finding the Fourth Proportional to 108,538.68, 149,787.98 and 63,209.36

Step by Step Solution

1. Step 1: Write the proportion equation
   108,538.68 : 149,787.98 = 63,209.36 : x
2. Step 2: Convert to fraction form
   108,538.68/149,787.98 = 63,209.36/x
3. Step 3: Cross multiply
   108,538.68x = 149,787.98 × 63,209.36
4. Step 4: Simplify right side
   108,538.68x = 9,468,003,002.50
5. Step 5: Solve for x
   x = 9,468,003,002.50/108,538.68
6. Step 6: Final answer
   x = 87,231.60