Finding the Fourth Proportional to 67,784.31, 101,662.02 and 42,790.95

Step by Step Solution

1. Step 1: Write the proportion equation
   67,784.31 : 101,662.02 = 42,790.95 : x
2. Step 2: Convert to fraction form
   67,784.31/101,662.02 = 42,790.95/x
3. Step 3: Cross multiply
   67,784.31x = 101,662.02 × 42,790.95
4. Step 4: Simplify right side
   67,784.31x = 4,350,214,414.72
5. Step 5: Solve for x
   x = 4,350,214,414.72/67,784.31
6. Step 6: Final answer
   x = 64,177.31