Finding the Fourth Proportional to 78,048.34, 107,706.96 and 42,238.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,048.34 : 107,706.96 = 42,238.34 : x
2. Step 2: Convert to fraction form
   78,048.34/107,706.96 = 42,238.34/x
3. Step 3: Cross multiply
   78,048.34x = 107,706.96 × 42,238.34
4. Step 4: Simplify right side
   78,048.34x = 4,549,363,196.85
5. Step 5: Solve for x
   x = 4,549,363,196.85/78,048.34
6. Step 6: Final answer
   x = 58,289.04