Finding the Fourth Proportional to 105,223.87, 157,859.12 and 30,338.17

Step by Step Solution

1. Step 1: Write the proportion equation
   105,223.87 : 157,859.12 = 30,338.17 : x
2. Step 2: Convert to fraction form
   105,223.87/157,859.12 = 30,338.17/x
3. Step 3: Cross multiply
   105,223.87x = 157,859.12 × 30,338.17
4. Step 4: Simplify right side
   105,223.87x = 4,789,156,818.61
5. Step 5: Solve for x
   x = 4,789,156,818.61/105,223.87
6. Step 6: Final answer
   x = 45,513.98