Finding the Fourth Proportional to 85,951.35, 128,875.23 and 38,557.89

Step by Step Solution

1. Step 1: Write the proportion equation
   85,951.35 : 128,875.23 = 38,557.89 : x
2. Step 2: Convert to fraction form
   85,951.35/128,875.23 = 38,557.89/x
3. Step 3: Cross multiply
   85,951.35x = 128,875.23 × 38,557.89
4. Step 4: Simplify right side
   85,951.35x = 4,969,156,942.06
5. Step 5: Solve for x
   x = 4,969,156,942.06/85,951.35
6. Step 6: Final answer
   x = 57,813.60