Finding the Fourth Proportional to 66,540.76, 91,842.06 and 42,723.88

Step by Step Solution

1. Step 1: Write the proportion equation
   66,540.76 : 91,842.06 = 42,723.88 : x
2. Step 2: Convert to fraction form
   66,540.76/91,842.06 = 42,723.88/x
3. Step 3: Cross multiply
   66,540.76x = 91,842.06 × 42,723.88
4. Step 4: Simplify right side
   66,540.76x = 3,923,849,150.39
5. Step 5: Solve for x
   x = 3,923,849,150.39/66,540.76
6. Step 6: Final answer
   x = 58,969.11