Finding the Fourth Proportional to 78,041.62, 107,697.72 and 42,231.63

Step by Step Solution

1. Step 1: Write the proportion equation
   78,041.62 : 107,697.72 = 42,231.63 : x
2. Step 2: Convert to fraction form
   78,041.62/107,697.72 = 42,231.63/x
3. Step 3: Cross multiply
   78,041.62x = 107,697.72 × 42,231.63
4. Step 4: Simplify right side
   78,041.62x = 4,548,250,262.88
5. Step 5: Solve for x
   x = 4,548,250,262.88/78,041.62
6. Step 6: Final answer
   x = 58,279.80