Finding the Fourth Proportional to 33,101.31, 45,642.72 and 31,001.79

Step by Step Solution

1. Step 1: Write the proportion equation
   33,101.31 : 45,642.72 = 31,001.79 : x
2. Step 2: Convert to fraction form
   33,101.31/45,642.72 = 31,001.79/x
3. Step 3: Cross multiply
   33,101.31x = 45,642.72 × 31,001.79
4. Step 4: Simplify right side
   33,101.31x = 1,415,006,020.47
5. Step 5: Solve for x
   x = 1,415,006,020.47/33,101.31
6. Step 6: Final answer
   x = 42,747.73