Finding the Fourth Proportional to 78,783.89, 108,723.23 and 42,975.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,783.89 : 108,723.23 = 42,975.18 : x
2. Step 2: Convert to fraction form
   78,783.89/108,723.23 = 42,975.18/x
3. Step 3: Cross multiply
   78,783.89x = 108,723.23 × 42,975.18
4. Step 4: Simplify right side
   78,783.89x = 4,672,400,164.56
5. Step 5: Solve for x
   x = 4,672,400,164.56/78,783.89
6. Step 6: Final answer
   x = 59,306.55