Finding the Fourth Proportional to 53,117.91, 73,301.40 and 30,470.31

Step by Step Solution

1. Step 1: Write the proportion equation
   53,117.91 : 73,301.40 = 30,470.31 : x
2. Step 2: Convert to fraction form
   53,117.91/73,301.40 = 30,470.31/x
3. Step 3: Cross multiply
   53,117.91x = 73,301.40 × 30,470.31
4. Step 4: Simplify right side
   53,117.91x = 2,233,516,381.43
5. Step 5: Solve for x
   x = 2,233,516,381.43/53,117.91
6. Step 6: Final answer
   x = 42,048.27