Finding the Fourth Proportional to 137,454.57, 189,683.37 and 83,719.98

Step by Step Solution

1. Step 1: Write the proportion equation
   137,454.57 : 189,683.37 = 83,719.98 : x
2. Step 2: Convert to fraction form
   137,454.57/189,683.37 = 83,719.98/x
3. Step 3: Cross multiply
   137,454.57x = 189,683.37 × 83,719.98
4. Step 4: Simplify right side
   137,454.57x = 15,880,287,942.73
5. Step 5: Solve for x
   x = 15,880,287,942.73/137,454.57
6. Step 6: Final answer
   x = 115,531.17