Finding the Fourth Proportional to 105,884.71, 146,119.89 and 58,137.64

Step by Step Solution

1. Step 1: Write the proportion equation
   105,884.71 : 146,119.89 = 58,137.64 : x
2. Step 2: Convert to fraction form
   105,884.71/146,119.89 = 58,137.64/x
3. Step 3: Cross multiply
   105,884.71x = 146,119.89 × 58,137.64
4. Step 4: Simplify right side
   105,884.71x = 8,495,065,561.66
5. Step 5: Solve for x
   x = 8,495,065,561.66/105,884.71
6. Step 6: Final answer
   x = 80,229.39