Finding the Fourth Proportional to 78,433.02, 108,237.42 and 42,623.16

Step by Step Solution

1. Step 1: Write the proportion equation
   78,433.02 : 108,237.42 = 42,623.16 : x
2. Step 2: Convert to fraction form
   78,433.02/108,237.42 = 42,623.16/x
3. Step 3: Cross multiply
   78,433.02x = 108,237.42 × 42,623.16
4. Step 4: Simplify right side
   78,433.02x = 4,613,420,870.65
5. Step 5: Solve for x
   x = 4,613,420,870.65/78,433.02
6. Step 6: Final answer
   x = 58,819.88