Finding the Fourth Proportional to 78,588.63, 108,452.72 and 42,778.94

Step by Step Solution

1. Step 1: Write the proportion equation
   78,588.63 : 108,452.72 = 42,778.94 : x
2. Step 2: Convert to fraction form
   78,588.63/108,452.72 = 42,778.94/x
3. Step 3: Cross multiply
   78,588.63x = 108,452.72 × 42,778.94
4. Step 4: Simplify right side
   78,588.63x = 4,639,491,966.40
5. Step 5: Solve for x
   x = 4,639,491,966.40/78,588.63
6. Step 6: Final answer
   x = 59,035.16