Finding the Fourth Proportional to 105,288.88, 157,886.39 and 30,391.22

Step by Step Solution

1. Step 1: Write the proportion equation
   105,288.88 : 157,886.39 = 30,391.22 : x
2. Step 2: Convert to fraction form
   105,288.88/157,886.39 = 30,391.22/x
3. Step 3: Cross multiply
   105,288.88x = 157,886.39 × 30,391.22
4. Step 4: Simplify right side
   105,288.88x = 4,798,359,892.12
5. Step 5: Solve for x
   x = 4,798,359,892.12/105,288.88
6. Step 6: Final answer
   x = 45,573.28