Finding the Fourth Proportional to 137,141.02, 189,371.42 and 86,238.93

Step by Step Solution

1. Step 1: Write the proportion equation
   137,141.02 : 189,371.42 = 86,238.93 : x
2. Step 2: Convert to fraction form
   137,141.02/189,371.42 = 86,238.93/x
3. Step 3: Cross multiply
   137,141.02x = 189,371.42 × 86,238.93
4. Step 4: Simplify right side
   137,141.02x = 16,331,188,633.38
5. Step 5: Solve for x
   x = 16,331,188,633.38/137,141.02
6. Step 6: Final answer
   x = 119,083.18