Finding the Fourth Proportional to 78,234.07, 107,962.86 and 42,423.97

Step by Step Solution

1. Step 1: Write the proportion equation
   78,234.07 : 107,962.86 = 42,423.97 : x
2. Step 2: Convert to fraction form
   78,234.07/107,962.86 = 42,423.97/x
3. Step 3: Cross multiply
   78,234.07x = 107,962.86 × 42,423.97
4. Step 4: Simplify right side
   78,234.07x = 4,580,213,133.75
5. Step 5: Solve for x
   x = 4,580,213,133.75/78,234.07
6. Step 6: Final answer
   x = 58,544.99