Finding the Fourth Proportional to 78,041.27, 107,697.23 and 42,231.28

Step by Step Solution

1. Step 1: Write the proportion equation
   78,041.27 : 107,697.23 = 42,231.28 : x
2. Step 2: Convert to fraction form
   78,041.27/107,697.23 = 42,231.28/x
3. Step 3: Cross multiply
   78,041.27x = 107,697.23 × 42,231.28
4. Step 4: Simplify right side
   78,041.27x = 4,548,191,711.69
5. Step 5: Solve for x
   x = 4,548,191,711.69/78,041.27
6. Step 6: Final answer
   x = 58,279.31