Finding the Fourth Proportional to 98,665.77, 136,171.22 and 64,702.83

Step by Step Solution

1. Step 1: Write the proportion equation
   98,665.77 : 136,171.22 = 64,702.83 : x
2. Step 2: Convert to fraction form
   98,665.77/136,171.22 = 64,702.83/x
3. Step 3: Cross multiply
   98,665.77x = 136,171.22 × 64,702.83
4. Step 4: Simplify right side
   98,665.77x = 8,810,663,298.55
5. Step 5: Solve for x
   x = 8,810,663,298.55/98,665.77
6. Step 6: Final answer
   x = 89,298.07