Finding the Fourth Proportional to 78,424.57, 108,223.01 and 42,613.81

Step by Step Solution

1. Step 1: Write the proportion equation
   78,424.57 : 108,223.01 = 42,613.81 : x
2. Step 2: Convert to fraction form
   78,424.57/108,223.01 = 42,613.81/x
3. Step 3: Cross multiply
   78,424.57x = 108,223.01 × 42,613.81
4. Step 4: Simplify right side
   78,424.57x = 4,611,794,733.98
5. Step 5: Solve for x
   x = 4,611,794,733.98/78,424.57
6. Step 6: Final answer
   x = 58,805.49