Finding the Fourth Proportional to 72,092.86, 107,988.50 and 57,976.45

Step by Step Solution

1. Step 1: Write the proportion equation
   72,092.86 : 107,988.50 = 57,976.45 : x
2. Step 2: Convert to fraction form
   72,092.86/107,988.50 = 57,976.45/x
3. Step 3: Cross multiply
   72,092.86x = 107,988.50 × 57,976.45
4. Step 4: Simplify right side
   72,092.86x = 6,260,789,580.94
5. Step 5: Solve for x
   x = 6,260,789,580.94/72,092.86
6. Step 6: Final answer
   x = 86,843.41