Finding the Fourth Proportional to 93,026.72, 139,610.30 and 68,131.31

Step by Step Solution

1. Step 1: Write the proportion equation
   93,026.72 : 139,610.30 = 68,131.31 : x
2. Step 2: Convert to fraction form
   93,026.72/139,610.30 = 68,131.31/x
3. Step 3: Cross multiply
   93,026.72x = 139,610.30 × 68,131.31
4. Step 4: Simplify right side
   93,026.72x = 9,511,833,059.88
5. Step 5: Solve for x
   x = 9,511,833,059.88/93,026.72
6. Step 6: Final answer
   x = 102,248.40