Finding the Fourth Proportional to 78,784.67, 108,723.18 and 42,975.45

Step by Step Solution

1. Step 1: Write the proportion equation
   78,784.67 : 108,723.18 = 42,975.45 : x
2. Step 2: Convert to fraction form
   78,784.67/108,723.18 = 42,975.45/x
3. Step 3: Cross multiply
   78,784.67x = 108,723.18 × 42,975.45
4. Step 4: Simplify right side
   78,784.67x = 4,672,427,585.93
5. Step 5: Solve for x
   x = 4,672,427,585.93/78,784.67
6. Step 6: Final answer
   x = 59,306.30