Finding the Fourth Proportional to 66,449.08, 91,699.86 and 42,575.86

Step by Step Solution

1. Step 1: Write the proportion equation
   66,449.08 : 91,699.86 = 42,575.86 : x
2. Step 2: Convert to fraction form
   66,449.08/91,699.86 = 42,575.86/x
3. Step 3: Cross multiply
   66,449.08x = 91,699.86 × 42,575.86
4. Step 4: Simplify right side
   66,449.08x = 3,904,200,401.38
5. Step 5: Solve for x
   x = 3,904,200,401.38/66,449.08
6. Step 6: Final answer
   x = 58,754.77