Finding the Fourth Proportional to 105,650.84, 145,799.30 and 57,903.16

Step by Step Solution

1. Step 1: Write the proportion equation
   105,650.84 : 145,799.30 = 57,903.16 : x
2. Step 2: Convert to fraction form
   105,650.84/145,799.30 = 57,903.16/x
3. Step 3: Cross multiply
   105,650.84x = 145,799.30 × 57,903.16
4. Step 4: Simplify right side
   105,650.84x = 8,442,240,195.79
5. Step 5: Solve for x
   x = 8,442,240,195.79/105,650.84
6. Step 6: Final answer
   x = 79,906.99