Finding the Fourth Proportional to 78,185.28, 107,941.92 and 51,374.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,185.28 : 107,941.92 = 51,374.72 : x
2. Step 2: Convert to fraction form
   78,185.28/107,941.92 = 51,374.72/x
3. Step 3: Cross multiply
   78,185.28x = 107,941.92 × 51,374.72
4. Step 4: Simplify right side
   78,185.28x = 5,545,485,916.26
5. Step 5: Solve for x
   x = 5,545,485,916.26/78,185.28
6. Step 6: Final answer
   x = 70,927.49