Finding the Fourth Proportional to 78,947.58, 108,948.06 and 43,138.20

Step by Step Solution

1. Step 1: Write the proportion equation
   78,947.58 : 108,948.06 = 43,138.20 : x
2. Step 2: Convert to fraction form
   78,947.58/108,948.06 = 43,138.20/x
3. Step 3: Cross multiply
   78,947.58x = 108,948.06 × 43,138.20
4. Step 4: Simplify right side
   78,947.58x = 4,699,823,201.89
5. Step 5: Solve for x
   x = 4,699,823,201.89/78,947.58
6. Step 6: Final answer
   x = 59,530.93