Finding the Fourth Proportional to 85,328.88, 127,821.96 and 42,505.32

Step by Step Solution

1. Step 1: Write the proportion equation
   85,328.88 : 127,821.96 = 42,505.32 : x
2. Step 2: Convert to fraction form
   85,328.88/127,821.96 = 42,505.32/x
3. Step 3: Cross multiply
   85,328.88x = 127,821.96 × 42,505.32
4. Step 4: Simplify right side
   85,328.88x = 5,433,113,312.83
5. Step 5: Solve for x
   x = 5,433,113,312.83/85,328.88
6. Step 6: Final answer
   x = 63,672.62