Finding the Fourth Proportional to 105,296.31, 157,921.18 and 30,400.17

Step by Step Solution

1. Step 1: Write the proportion equation
   105,296.31 : 157,921.18 = 30,400.17 : x
2. Step 2: Convert to fraction form
   105,296.31/157,921.18 = 30,400.17/x
3. Step 3: Cross multiply
   105,296.31x = 157,921.18 × 30,400.17
4. Step 4: Simplify right side
   105,296.31x = 4,800,830,642.60
5. Step 5: Solve for x
   x = 4,800,830,642.60/105,296.31
6. Step 6: Final answer
   x = 45,593.53