Finding the Fourth Proportional to 31,106.25, 42,927.71 and 17,678.07

Step by Step Solution

1. Step 1: Write the proportion equation
   31,106.25 : 42,927.71 = 17,678.07 : x
2. Step 2: Convert to fraction form
   31,106.25/42,927.71 = 17,678.07/x
3. Step 3: Cross multiply
   31,106.25x = 42,927.71 × 17,678.07
4. Step 4: Simplify right side
   31,106.25x = 758,878,973.93
5. Step 5: Solve for x
   x = 758,878,973.93/31,106.25
6. Step 6: Final answer
   x = 24,396.35