Finding the Fourth Proportional to 105,746.87, 145,938.37 and 60,423.81

Step by Step Solution

1. Step 1: Write the proportion equation
   105,746.87 : 145,938.37 = 60,423.81 : x
2. Step 2: Convert to fraction form
   105,746.87/145,938.37 = 60,423.81/x
3. Step 3: Cross multiply
   105,746.87x = 145,938.37 × 60,423.81
4. Step 4: Simplify right side
   105,746.87x = 8,818,152,340.59
5. Step 5: Solve for x
   x = 8,818,152,340.59/105,746.87
6. Step 6: Final answer
   x = 83,389.25