Finding the Fourth Proportional to 93,394.82, 128,845.59 and 65,116.91

Step by Step Solution

1. Step 1: Write the proportion equation
   93,394.82 : 128,845.59 = 65,116.91 : x
2. Step 2: Convert to fraction form
   93,394.82/128,845.59 = 65,116.91/x
3. Step 3: Cross multiply
   93,394.82x = 128,845.59 × 65,116.91
4. Step 4: Simplify right side
   93,394.82x = 8,390,026,765.85
5. Step 5: Solve for x
   x = 8,390,026,765.85/93,394.82
6. Step 6: Final answer
   x = 89,833.96