Finding the Fourth Proportional to 106,105.50, 146,432.79 and 61,393.50

Step by Step Solution

1. Step 1: Write the proportion equation
   106,105.50 : 146,432.79 = 61,393.50 : x
2. Step 2: Convert to fraction form
   106,105.50/146,432.79 = 61,393.50/x
3. Step 3: Cross multiply
   106,105.50x = 146,432.79 × 61,393.50
4. Step 4: Simplify right side
   106,105.50x = 8,990,021,492.87
5. Step 5: Solve for x
   x = 8,990,021,492.87/106,105.50
6. Step 6: Final answer
   x = 84,727.20