Finding the Fourth Proportional to 42,318.78, 58,369.59 and 27,961.98

Step by Step Solution

1. Step 1: Write the proportion equation
   42,318.78 : 58,369.59 = 27,961.98 : x
2. Step 2: Convert to fraction form
   42,318.78/58,369.59 = 27,961.98/x
3. Step 3: Cross multiply
   42,318.78x = 58,369.59 × 27,961.98
4. Step 4: Simplify right side
   42,318.78x = 1,632,129,308.19
5. Step 5: Solve for x
   x = 1,632,129,308.19/42,318.78
6. Step 6: Final answer
   x = 38,567.49