Finding the Fourth Proportional to 78,052.53, 107,712.78 and 42,242.55

Step by Step Solution

1. Step 1: Write the proportion equation
   78,052.53 : 107,712.78 = 42,242.55 : x
2. Step 2: Convert to fraction form
   78,052.53/107,712.78 = 42,242.55/x
3. Step 3: Cross multiply
   78,052.53x = 107,712.78 × 42,242.55
4. Step 4: Simplify right side
   78,052.53x = 4,550,062,494.79
5. Step 5: Solve for x
   x = 4,550,062,494.79/78,052.53
6. Step 6: Final answer
   x = 58,294.88