Finding the Fourth Proportional to 76,500.18, 105,570.05 and 42,508.53

Step by Step Solution

1. Step 1: Write the proportion equation
   76,500.18 : 105,570.05 = 42,508.53 : x
2. Step 2: Convert to fraction form
   76,500.18/105,570.05 = 42,508.53/x
3. Step 3: Cross multiply
   76,500.18x = 105,570.05 × 42,508.53
4. Step 4: Simplify right side
   76,500.18x = 4,487,627,424.98
5. Step 5: Solve for x
   x = 4,487,627,424.98/76,500.18
6. Step 6: Final answer
   x = 58,661.66