Finding the Fourth Proportional to 85,501.08, 128,247.98 and 83,498.76

Step by Step Solution

1. Step 1: Write the proportion equation
   85,501.08 : 128,247.98 = 83,498.76 : x
2. Step 2: Convert to fraction form
   85,501.08/128,247.98 = 83,498.76/x
3. Step 3: Cross multiply
   85,501.08x = 128,247.98 × 83,498.76
4. Step 4: Simplify right side
   85,501.08x = 10,708,546,885.01
5. Step 5: Solve for x
   x = 10,708,546,885.01/85,501.08
6. Step 6: Final answer
   x = 125,244.58