Finding the Fourth Proportional to 105,803.76, 146,009.20 and 60,482.72

Step by Step Solution

1. Step 1: Write the proportion equation
   105,803.76 : 146,009.20 = 60,482.72 : x
2. Step 2: Convert to fraction form
   105,803.76/146,009.20 = 60,482.72/x
3. Step 3: Cross multiply
   105,803.76x = 146,009.20 × 60,482.72
4. Step 4: Simplify right side
   105,803.76x = 8,831,033,561.02
5. Step 5: Solve for x
   x = 8,831,033,561.02/105,803.76
6. Step 6: Final answer
   x = 83,466.16