Finding the Fourth Proportional to 85,864.78, 128,782.59 and 22,685.59

Step by Step Solution

1. Step 1: Write the proportion equation
   85,864.78 : 128,782.59 = 22,685.59 : x
2. Step 2: Convert to fraction form
   85,864.78/128,782.59 = 22,685.59/x
3. Step 3: Cross multiply
   85,864.78x = 128,782.59 × 22,685.59
4. Step 4: Simplify right side
   85,864.78x = 2,921,509,035.88
5. Step 5: Solve for x
   x = 2,921,509,035.88/85,864.78
6. Step 6: Final answer
   x = 34,024.53