Finding the Fourth Proportional to 78,622.56, 108,499.16 and 42,812.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,622.56 : 108,499.16 = 42,812.56 : x
2. Step 2: Convert to fraction form
   78,622.56/108,499.16 = 42,812.56/x
3. Step 3: Cross multiply
   78,622.56x = 108,499.16 × 42,812.56
4. Step 4: Simplify right side
   78,622.56x = 4,645,126,797.45
5. Step 5: Solve for x
   x = 4,645,126,797.45/78,622.56
6. Step 6: Final answer
   x = 59,081.35