Finding the Fourth Proportional to 108,433.76, 149,638.56 and 60,687.10

Step by Step Solution

1. Step 1: Write the proportion equation
   108,433.76 : 149,638.56 = 60,687.10 : x
2. Step 2: Convert to fraction form
   108,433.76/149,638.56 = 60,687.10/x
3. Step 3: Cross multiply
   108,433.76x = 149,638.56 × 60,687.10
4. Step 4: Simplify right side
   108,433.76x = 9,081,130,254.58
5. Step 5: Solve for x
   x = 9,081,130,254.58/108,433.76
6. Step 6: Final answer
   x = 83,748.19