Finding the Fourth Proportional to 31,131.79, 42,961.66 and 17,703.02

Step by Step Solution

1. Step 1: Write the proportion equation
   31,131.79 : 42,961.66 = 17,703.02 : x
2. Step 2: Convert to fraction form
   31,131.79/42,961.66 = 17,703.02/x
3. Step 3: Cross multiply
   31,131.79x = 42,961.66 × 17,703.02
4. Step 4: Simplify right side
   31,131.79x = 760,551,189.36
5. Step 5: Solve for x
   x = 760,551,189.36/31,131.79
6. Step 6: Final answer
   x = 24,430.05