Finding the Fourth Proportional to 61,081.72, 92,038.72 and 50,231.48

Step by Step Solution

1. Step 1: Write the proportion equation
   61,081.72 : 92,038.72 = 50,231.48 : x
2. Step 2: Convert to fraction form
   61,081.72/92,038.72 = 50,231.48/x
3. Step 3: Cross multiply
   61,081.72x = 92,038.72 × 50,231.48
4. Step 4: Simplify right side
   61,081.72x = 4,623,241,122.91
5. Step 5: Solve for x
   x = 4,623,241,122.91/61,081.72
6. Step 6: Final answer
   x = 75,689.44