Finding the Fourth Proportional to 78,781.94, 108,720.55 and 42,973.24

Step by Step Solution

1. Step 1: Write the proportion equation
   78,781.94 : 108,720.55 = 42,973.24 : x
2. Step 2: Convert to fraction form
   78,781.94/108,720.55 = 42,973.24/x
3. Step 3: Cross multiply
   78,781.94x = 108,720.55 × 42,973.24
4. Step 4: Simplify right side
   78,781.94x = 4,672,073,744.48
5. Step 5: Solve for x
   x = 4,672,073,744.48/78,781.94
6. Step 6: Final answer
   x = 59,303.87