Finding the Fourth Proportional to 49,387.83, 68,018.45 and 42,671.31

Step by Step Solution

1. Step 1: Write the proportion equation
   49,387.83 : 68,018.45 = 42,671.31 : x
2. Step 2: Convert to fraction form
   49,387.83/68,018.45 = 42,671.31/x
3. Step 3: Cross multiply
   49,387.83x = 68,018.45 × 42,671.31
4. Step 4: Simplify right side
   49,387.83x = 2,902,436,152.31
5. Step 5: Solve for x
   x = 2,902,436,152.31/49,387.83
6. Step 6: Final answer
   x = 58,768.25