Finding the Fourth Proportional to 60,531.58, 83,474.98 and 40,389.31

Step by Step Solution

1. Step 1: Write the proportion equation
   60,531.58 : 83,474.98 = 40,389.31 : x
2. Step 2: Convert to fraction form
   60,531.58/83,474.98 = 40,389.31/x
3. Step 3: Cross multiply
   60,531.58x = 83,474.98 × 40,389.31
4. Step 4: Simplify right side
   60,531.58x = 3,371,496,844.46
5. Step 5: Solve for x
   x = 3,371,496,844.46/60,531.58
6. Step 6: Final answer
   x = 55,698.15