Finding the Fourth Proportional to 78,828.69, 108,785.91 and 43,021.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,828.69 : 108,785.91 = 43,021.02 : x
2. Step 2: Convert to fraction form
   78,828.69/108,785.91 = 43,021.02/x
3. Step 3: Cross multiply
   78,828.69x = 108,785.91 × 43,021.02
4. Step 4: Simplify right side
   78,828.69x = 4,680,080,809.83
5. Step 5: Solve for x
   x = 4,680,080,809.83/78,828.69
6. Step 6: Final answer
   x = 59,370.27