Finding the Fourth Proportional to 93,137.46, 139,030.01 and 86,198.82

Step by Step Solution

1. Step 1: Write the proportion equation
   93,137.46 : 139,030.01 = 86,198.82 : x
2. Step 2: Convert to fraction form
   93,137.46/139,030.01 = 86,198.82/x
3. Step 3: Cross multiply
   93,137.46x = 139,030.01 × 86,198.82
4. Step 4: Simplify right side
   93,137.46x = 11,984,222,806.59
5. Step 5: Solve for x
   x = 11,984,222,806.59/93,137.46
6. Step 6: Final answer
   x = 128,672.42