Finding the Fourth Proportional to 72,091.86, 107,987.00 and 57,975.45

Step by Step Solution

1. Step 1: Write the proportion equation
   72,091.86 : 107,987.00 = 57,975.45 : x
2. Step 2: Convert to fraction form
   72,091.86/107,987.00 = 57,975.45/x
3. Step 3: Cross multiply
   72,091.86x = 107,987.00 × 57,975.45
4. Step 4: Simplify right side
   72,091.86x = 6,260,594,629.27
5. Step 5: Solve for x
   x = 6,260,594,629.27/72,091.86
6. Step 6: Final answer
   x = 86,841.91