Finding the Fourth Proportional to 78,930.30, 108,918.10 and 43,112.71

Step by Step Solution

1. Step 1: Write the proportion equation
   78,930.30 : 108,918.10 = 43,112.71 : x
2. Step 2: Convert to fraction form
   78,930.30/108,918.10 = 43,112.71/x
3. Step 3: Cross multiply
   78,930.30x = 108,918.10 × 43,112.71
4. Step 4: Simplify right side
   78,930.30x = 4,695,754,459.05
5. Step 5: Solve for x
   x = 4,695,754,459.05/78,930.30
6. Step 6: Final answer
   x = 59,492.42