Finding the Fourth Proportional to 31,158.09, 42,999.06 and 17,011.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,158.09 : 42,999.06 = 17,011.84 : x
2. Step 2: Convert to fraction form
   31,158.09/42,999.06 = 17,011.84/x
3. Step 3: Cross multiply
   31,158.09x = 42,999.06 × 17,011.84
4. Step 4: Simplify right side
   31,158.09x = 731,493,128.87
5. Step 5: Solve for x
   x = 731,493,128.87/31,158.09
6. Step 6: Final answer
   x = 23,476.83