Finding the Fourth Proportional to 113,008.89, 155,946.84 and 67,688.79

Step by Step Solution

1. Step 1: Write the proportion equation
   113,008.89 : 155,946.84 = 67,688.79 : x
2. Step 2: Convert to fraction form
   113,008.89/155,946.84 = 67,688.79/x
3. Step 3: Cross multiply
   113,008.89x = 155,946.84 × 67,688.79
4. Step 4: Simplify right side
   113,008.89x = 10,555,852,903.92
5. Step 5: Solve for x
   x = 10,555,852,903.92/113,008.89
6. Step 6: Final answer
   x = 93,407.28