Finding the Fourth Proportional to 31,022.19, 42,810.66 and 16,875

Step by Step Solution

1. Step 1: Write the proportion equation
   31,022.19 : 42,810.66 = 16,875 : x
2. Step 2: Convert to fraction form
   31,022.19/42,810.66 = 16,875/x
3. Step 3: Cross multiply
   31,022.19x = 42,810.66 × 16,875
4. Step 4: Simplify right side
   31,022.19x = 722,429,887.50
5. Step 5: Solve for x
   x = 722,429,887.50/31,022.19
6. Step 6: Final answer
   x = 23,287.52