Finding the Fourth Proportional to 78,048.56, 107,707.02 and 42,238.83

Step by Step Solution

1. Step 1: Write the proportion equation
   78,048.56 : 107,707.02 = 42,238.83 : x
2. Step 2: Convert to fraction form
   78,048.56/107,707.02 = 42,238.83/x
3. Step 3: Cross multiply
   78,048.56x = 107,707.02 × 42,238.83
4. Step 4: Simplify right side
   78,048.56x = 4,549,418,298.70
5. Step 5: Solve for x
   x = 4,549,418,298.70/78,048.56
6. Step 6: Final answer
   x = 58,289.58