Finding the Fourth Proportional to 76,540.64, 105,627.33 and 42,086.82

Step by Step Solution

1. Step 1: Write the proportion equation
   76,540.64 : 105,627.33 = 42,086.82 : x
2. Step 2: Convert to fraction form
   76,540.64/105,627.33 = 42,086.82/x
3. Step 3: Cross multiply
   76,540.64x = 105,627.33 × 42,086.82
4. Step 4: Simplify right side
   76,540.64x = 4,445,518,424.79
5. Step 5: Solve for x
   x = 4,445,518,424.79/76,540.64
6. Step 6: Final answer
   x = 58,080.50