Finding the Fourth Proportional to 96,468.78, 144,469.87 and 83,405.10

Step by Step Solution

1. Step 1: Write the proportion equation
   96,468.78 : 144,469.87 = 83,405.10 : x
2. Step 2: Convert to fraction form
   96,468.78/144,469.87 = 83,405.10/x
3. Step 3: Cross multiply
   96,468.78x = 144,469.87 × 83,405.10
4. Step 4: Simplify right side
   96,468.78x = 12,049,523,954.34
5. Step 5: Solve for x
   x = 12,049,523,954.34/96,468.78
6. Step 6: Final answer
   x = 124,905.94