Finding the Fourth Proportional to 66,281.98, 91,406.46 and 42,367

Step by Step Solution

1. Step 1: Write the proportion equation
   66,281.98 : 91,406.46 = 42,367 : x
2. Step 2: Convert to fraction form
   66,281.98/91,406.46 = 42,367/x
3. Step 3: Cross multiply
   66,281.98x = 91,406.46 × 42,367
4. Step 4: Simplify right side
   66,281.98x = 3,872,617,490.82
5. Step 5: Solve for x
   x = 3,872,617,490.82/66,281.98
6. Step 6: Final answer
   x = 58,426.40