Finding the Fourth Proportional to 66,468.62, 91,735.50 and 42,271.86

Step by Step Solution

1. Step 1: Write the proportion equation
   66,468.62 : 91,735.50 = 42,271.86 : x
2. Step 2: Convert to fraction form
   66,468.62/91,735.50 = 42,271.86/x
3. Step 3: Cross multiply
   66,468.62x = 91,735.50 × 42,271.86
4. Step 4: Simplify right side
   66,468.62x = 3,877,830,715.56
5. Step 5: Solve for x
   x = 3,877,830,715.56/66,468.62
6. Step 6: Final answer
   x = 58,340.77