Finding the Fourth Proportional to 31,250.95, 43,085.60 and 19,916.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,250.95 : 43,085.60 = 19,916.31 : x
2. Step 2: Convert to fraction form
   31,250.95/43,085.60 = 19,916.31/x
3. Step 3: Cross multiply
   31,250.95x = 43,085.60 × 19,916.31
4. Step 4: Simplify right side
   31,250.95x = 858,106,066.55
5. Step 5: Solve for x
   x = 858,106,066.55/31,250.95
6. Step 6: Final answer
   x = 27,458.56