Finding the Fourth Proportional to 108,588.91, 149,801.92 and 72,308.61

Step by Step Solution

1. Step 1: Write the proportion equation
   108,588.91 : 149,801.92 = 72,308.61 : x
2. Step 2: Convert to fraction form
   108,588.91/149,801.92 = 72,308.61/x
3. Step 3: Cross multiply
   108,588.91x = 149,801.92 × 72,308.61
4. Step 4: Simplify right side
   108,588.91x = 10,831,968,610.53
5. Step 5: Solve for x
   x = 10,831,968,610.53/108,588.91
6. Step 6: Final answer
   x = 99,752.07