Finding the Fourth Proportional to 65,499.86, 98,268.96 and 21,125.72

Step by Step Solution

1. Step 1: Write the proportion equation
   65,499.86 : 98,268.96 = 21,125.72 : x
2. Step 2: Convert to fraction form
   65,499.86/98,268.96 = 21,125.72/x
3. Step 3: Cross multiply
   65,499.86x = 98,268.96 × 21,125.72
4. Step 4: Simplify right side
   65,499.86x = 2,076,002,533.65
5. Step 5: Solve for x
   x = 2,076,002,533.65/65,499.86
6. Step 6: Final answer
   x = 31,694.76