Finding the Fourth Proportional to 78,916.06, 108,906.78 and 43,109.40

Step by Step Solution

1. Step 1: Write the proportion equation
   78,916.06 : 108,906.78 = 43,109.40 : x
2. Step 2: Convert to fraction form
   78,916.06/108,906.78 = 43,109.40/x
3. Step 3: Cross multiply
   78,916.06x = 108,906.78 × 43,109.40
4. Step 4: Simplify right side
   78,916.06x = 4,694,905,941.73
5. Step 5: Solve for x
   x = 4,694,905,941.73/78,916.06
6. Step 6: Final answer
   x = 59,492.40