Finding the Fourth Proportional to 78,013.82, 107,658.90 and 42,203.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,013.82 : 107,658.90 = 42,203.72 : x
2. Step 2: Convert to fraction form
   78,013.82/107,658.90 = 42,203.72/x
3. Step 3: Cross multiply
   78,013.82x = 107,658.90 × 42,203.72
4. Step 4: Simplify right side
   78,013.82x = 4,543,605,532.81
5. Step 5: Solve for x
   x = 4,543,605,532.81/78,013.82
6. Step 6: Final answer
   x = 58,241.04