Finding the Fourth Proportional to 31,054.56, 42,858.72 and 19,115.52

Step by Step Solution

1. Step 1: Write the proportion equation
   31,054.56 : 42,858.72 = 19,115.52 : x
2. Step 2: Convert to fraction form
   31,054.56/42,858.72 = 19,115.52/x
3. Step 3: Cross multiply
   31,054.56x = 42,858.72 × 19,115.52
4. Step 4: Simplify right side
   31,054.56x = 819,266,719.33
5. Step 5: Solve for x
   x = 819,266,719.33/31,054.56
6. Step 6: Final answer
   x = 26,381.53