Finding the Fourth Proportional to 108,407.40, 149,588.76 and 60,648.72

Step by Step Solution

1. Step 1: Write the proportion equation
   108,407.40 : 149,588.76 = 60,648.72 : x
2. Step 2: Convert to fraction form
   108,407.40/149,588.76 = 60,648.72/x
3. Step 3: Cross multiply
   108,407.40x = 149,588.76 × 60,648.72
4. Step 4: Simplify right side
   108,407.40x = 9,072,366,820.39
5. Step 5: Solve for x
   x = 9,072,366,820.39/108,407.40
6. Step 6: Final answer
   x = 83,687.71