Finding the Fourth Proportional to 105,854.55, 146,080.94 and 58,112.25

Step by Step Solution

1. Step 1: Write the proportion equation
   105,854.55 : 146,080.94 = 58,112.25 : x
2. Step 2: Convert to fraction form
   105,854.55/146,080.94 = 58,112.25/x
3. Step 3: Cross multiply
   105,854.55x = 146,080.94 × 58,112.25
4. Step 4: Simplify right side
   105,854.55x = 8,489,091,814.95
5. Step 5: Solve for x
   x = 8,489,091,814.95/105,854.55
6. Step 6: Final answer
   x = 80,195.81