Finding the Fourth Proportional to 73,890.78, 101,969.40 and 42,059.69

Step by Step Solution

1. Step 1: Write the proportion equation
   73,890.78 : 101,969.40 = 42,059.69 : x
2. Step 2: Convert to fraction form
   73,890.78/101,969.40 = 42,059.69/x
3. Step 3: Cross multiply
   73,890.78x = 101,969.40 × 42,059.69
4. Step 4: Simplify right side
   73,890.78x = 4,288,800,633.34
5. Step 5: Solve for x
   x = 4,288,800,633.34/73,890.78
6. Step 6: Final answer
   x = 58,042.43