Finding the Fourth Proportional to 76,524.59, 105,605.72 and 42,534.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,524.59 : 105,605.72 = 42,534.50 : x
2. Step 2: Convert to fraction form
   76,524.59/105,605.72 = 42,534.50/x
3. Step 3: Cross multiply
   76,524.59x = 105,605.72 × 42,534.50
4. Step 4: Simplify right side
   76,524.59x = 4,491,885,756.64
5. Step 5: Solve for x
   x = 4,491,885,756.64/76,524.59
6. Step 6: Final answer
   x = 58,698.60