Finding the Fourth Proportional to 78,052.56, 107,712.81 and 42,242.55

Step by Step Solution

1. Step 1: Write the proportion equation
   78,052.56 : 107,712.81 = 42,242.55 : x
2. Step 2: Convert to fraction form
   78,052.56/107,712.81 = 42,242.55/x
3. Step 3: Cross multiply
   78,052.56x = 107,712.81 × 42,242.55
4. Step 4: Simplify right side
   78,052.56x = 4,550,063,762.07
5. Step 5: Solve for x
   x = 4,550,063,762.07/78,052.56
6. Step 6: Final answer
   x = 58,294.87