Finding the Fourth Proportional to 85,557.86, 128,369.59 and 35,624.55

Step by Step Solution

1. Step 1: Write the proportion equation
   85,557.86 : 128,369.59 = 35,624.55 : x
2. Step 2: Convert to fraction form
   85,557.86/128,369.59 = 35,624.55/x
3. Step 3: Cross multiply
   85,557.86x = 128,369.59 × 35,624.55
4. Step 4: Simplify right side
   85,557.86x = 4,573,108,877.43
5. Step 5: Solve for x
   x = 4,573,108,877.43/85,557.86
6. Step 6: Final answer
   x = 53,450.48