Finding the Fourth Proportional to 66,491.52, 91,744.85 and 42,302.09

Step by Step Solution

1. Step 1: Write the proportion equation
   66,491.52 : 91,744.85 = 42,302.09 : x
2. Step 2: Convert to fraction form
   66,491.52/91,744.85 = 42,302.09/x
3. Step 3: Cross multiply
   66,491.52x = 91,744.85 × 42,302.09
4. Step 4: Simplify right side
   66,491.52x = 3,880,998,443.01
5. Step 5: Solve for x
   x = 3,880,998,443.01/66,491.52
6. Step 6: Final answer
   x = 58,368.32