Finding the Fourth Proportional to 105,034.50, 145,068.53 and 76,481.82

Step by Step Solution

1. Step 1: Write the proportion equation
   105,034.50 : 145,068.53 = 76,481.82 : x
2. Step 2: Convert to fraction form
   105,034.50/145,068.53 = 76,481.82/x
3. Step 3: Cross multiply
   105,034.50x = 145,068.53 × 76,481.82
4. Step 4: Simplify right side
   105,034.50x = 11,095,104,816.72
5. Step 5: Solve for x
   x = 11,095,104,816.72/105,034.50
6. Step 6: Final answer
   x = 105,632.96