Finding the Fourth Proportional to 49,388.37, 74,014.23 and 42,798.21

Step by Step Solution

1. Step 1: Write the proportion equation
   49,388.37 : 74,014.23 = 42,798.21 : x
2. Step 2: Convert to fraction form
   49,388.37/74,014.23 = 42,798.21/x
3. Step 3: Cross multiply
   49,388.37x = 74,014.23 × 42,798.21
4. Step 4: Simplify right side
   49,388.37x = 3,167,676,558.53
5. Step 5: Solve for x
   x = 3,167,676,558.53/49,388.37
6. Step 6: Final answer
   x = 64,138.11