Finding the Fourth Proportional to 115,492.89, 159,335.46 and 67,728.81

Step by Step Solution

1. Step 1: Write the proportion equation
   115,492.89 : 159,335.46 = 67,728.81 : x
2. Step 2: Convert to fraction form
   115,492.89/159,335.46 = 67,728.81/x
3. Step 3: Cross multiply
   115,492.89x = 159,335.46 × 67,728.81
4. Step 4: Simplify right side
   115,492.89x = 10,791,601,096.60
5. Step 5: Solve for x
   x = 10,791,601,096.60/115,492.89
6. Step 6: Final answer
   x = 93,439.53