Finding the Fourth Proportional to 105,900.63, 146,155.82 and 61,188.63

Step by Step Solution

1. Step 1: Write the proportion equation
   105,900.63 : 146,155.82 = 61,188.63 : x
2. Step 2: Convert to fraction form
   105,900.63/146,155.82 = 61,188.63/x
3. Step 3: Cross multiply
   105,900.63x = 146,155.82 × 61,188.63
4. Step 4: Simplify right side
   105,900.63x = 8,943,074,392.33
5. Step 5: Solve for x
   x = 8,943,074,392.33/105,900.63
6. Step 6: Final answer
   x = 84,447.79