Finding the Fourth Proportional to 85,678.55, 128,514.62 and 22,498.10

Step by Step Solution

1. Step 1: Write the proportion equation
   85,678.55 : 128,514.62 = 22,498.10 : x
2. Step 2: Convert to fraction form
   85,678.55/128,514.62 = 22,498.10/x
3. Step 3: Cross multiply
   85,678.55x = 128,514.62 × 22,498.10
4. Step 4: Simplify right side
   85,678.55x = 2,891,334,017.16
5. Step 5: Solve for x
   x = 2,891,334,017.16/85,678.55
6. Step 6: Final answer
   x = 33,746.30