Finding the Fourth Proportional to 105,841.32, 146,074.50 and 61,129.32

Step by Step Solution

1. Step 1: Write the proportion equation
   105,841.32 : 146,074.50 = 61,129.32 : x
2. Step 2: Convert to fraction form
   105,841.32/146,074.50 = 61,129.32/x
3. Step 3: Cross multiply
   105,841.32x = 146,074.50 × 61,129.32
4. Step 4: Simplify right side
   105,841.32x = 8,929,434,854.34
5. Step 5: Solve for x
   x = 8,929,434,854.34/105,841.32
6. Step 6: Final answer
   x = 84,366.25