Finding the Fourth Proportional to 89,361.90, 133,838.71 and 42,647.58

Step by Step Solution

1. Step 1: Write the proportion equation
   89,361.90 : 133,838.71 = 42,647.58 : x
2. Step 2: Convert to fraction form
   89,361.90/133,838.71 = 42,647.58/x
3. Step 3: Cross multiply
   89,361.90x = 133,838.71 × 42,647.58
4. Step 4: Simplify right side
   89,361.90x = 5,707,896,985.20
5. Step 5: Solve for x
   x = 5,707,896,985.20/89,361.90
6. Step 6: Final answer
   x = 63,873.94