Finding the Fourth Proportional to 49,888.32, 68,688.72 and 42,318.96

Step by Step Solution

1. Step 1: Write the proportion equation
   49,888.32 : 68,688.72 = 42,318.96 : x
2. Step 2: Convert to fraction form
   49,888.32/68,688.72 = 42,318.96/x
3. Step 3: Cross multiply
   49,888.32x = 68,688.72 × 42,318.96
4. Step 4: Simplify right side
   49,888.32x = 2,906,835,194.13
5. Step 5: Solve for x
   x = 2,906,835,194.13/49,888.32
6. Step 6: Final answer
   x = 58,266.85