Finding the Fourth Proportional to 78,623.34, 108,498.84 and 42,812.70

Step by Step Solution

1. Step 1: Write the proportion equation
   78,623.34 : 108,498.84 = 42,812.70 : x
2. Step 2: Convert to fraction form
   78,623.34/108,498.84 = 42,812.70/x
3. Step 3: Cross multiply
   78,623.34x = 108,498.84 × 42,812.70
4. Step 4: Simplify right side
   78,623.34x = 4,645,128,287.27
5. Step 5: Solve for x
   x = 4,645,128,287.27/78,623.34
6. Step 6: Final answer
   x = 59,080.78