Finding the Fourth Proportional to 78,591.74, 108,457.52 and 42,782.38

Step by Step Solution

1. Step 1: Write the proportion equation
   78,591.74 : 108,457.52 = 42,782.38 : x
2. Step 2: Convert to fraction form
   78,591.74/108,457.52 = 42,782.38/x
3. Step 3: Cross multiply
   78,591.74x = 108,457.52 × 42,782.38
4. Step 4: Simplify right side
   78,591.74x = 4,640,070,349.44
5. Step 5: Solve for x
   x = 4,640,070,349.44/78,591.74
6. Step 6: Final answer
   x = 59,040.18