Finding the Fourth Proportional to 138,091.37, 207,005.83 and 88,030.94

Step by Step Solution

1. Step 1: Write the proportion equation
   138,091.37 : 207,005.83 = 88,030.94 : x
2. Step 2: Convert to fraction form
   138,091.37/207,005.83 = 88,030.94/x
3. Step 3: Cross multiply
   138,091.37x = 207,005.83 × 88,030.94
4. Step 4: Simplify right side
   138,091.37x = 18,222,916,545.27
5. Step 5: Solve for x
   x = 18,222,916,545.27/138,091.37
6. Step 6: Final answer
   x = 131,962.75