Finding the Fourth Proportional to 105,985.20, 146,256.60 and 58,238.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,985.20 : 146,256.60 = 58,238.52 : x
2. Step 2: Convert to fraction form
   105,985.20/146,256.60 = 58,238.52/x
3. Step 3: Cross multiply
   105,985.20x = 146,256.60 × 58,238.52
4. Step 4: Simplify right side
   105,985.20x = 8,517,767,924.23
5. Step 5: Solve for x
   x = 8,517,767,924.23/105,985.20
6. Step 6: Final answer
   x = 80,367.52