Finding the Fourth Proportional to 78,786.46, 108,725.14 and 42,976.47

Step by Step Solution

1. Step 1: Write the proportion equation
   78,786.46 : 108,725.14 = 42,976.47 : x
2. Step 2: Convert to fraction form
   78,786.46/108,725.14 = 42,976.47/x
3. Step 3: Cross multiply
   78,786.46x = 108,725.14 × 42,976.47
4. Step 4: Simplify right side
   78,786.46x = 4,672,622,935.55
5. Step 5: Solve for x
   x = 4,672,622,935.55/78,786.46
6. Step 6: Final answer
   x = 59,307.43