Finding the Fourth Proportional to 105,811.80, 146,025.60 and 58,064.76

Step by Step Solution

1. Step 1: Write the proportion equation
   105,811.80 : 146,025.60 = 58,064.76 : x
2. Step 2: Convert to fraction form
   105,811.80/146,025.60 = 58,064.76/x
3. Step 3: Cross multiply
   105,811.80x = 146,025.60 × 58,064.76
4. Step 4: Simplify right side
   105,811.80x = 8,478,941,417.86
5. Step 5: Solve for x
   x = 8,478,941,417.86/105,811.80
6. Step 6: Final answer
   x = 80,132.29