Finding the Fourth Proportional to 92,820.72, 128,092.72 and 50,379.25

Step by Step Solution

1. Step 1: Write the proportion equation
   92,820.72 : 128,092.72 = 50,379.25 : x
2. Step 2: Convert to fraction form
   92,820.72/128,092.72 = 50,379.25/x
3. Step 3: Cross multiply
   92,820.72x = 128,092.72 × 50,379.25
4. Step 4: Simplify right side
   92,820.72x = 6,453,215,164.06
5. Step 5: Solve for x
   x = 6,453,215,164.06/92,820.72
6. Step 6: Final answer
   x = 69,523.43