Finding the Fourth Proportional to 42,458.31, 63,688.88 and 19,084.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,458.31 : 63,688.88 = 19,084.82 : x
2. Step 2: Convert to fraction form
   42,458.31/63,688.88 = 19,084.82/x
3. Step 3: Cross multiply
   42,458.31x = 63,688.88 × 19,084.82
4. Step 4: Simplify right side
   42,458.31x = 1,215,490,540.07
5. Step 5: Solve for x
   x = 1,215,490,540.07/42,458.31
6. Step 6: Final answer
   x = 28,627.86