Finding the Fourth Proportional to 74,820.63, 103,131.27 and 65,105.22

Step by Step Solution

1. Step 1: Write the proportion equation
   74,820.63 : 103,131.27 = 65,105.22 : x
2. Step 2: Convert to fraction form
   74,820.63/103,131.27 = 65,105.22/x
3. Step 3: Cross multiply
   74,820.63x = 103,131.27 × 65,105.22
4. Step 4: Simplify right side
   74,820.63x = 6,714,384,022.23
5. Step 5: Solve for x
   x = 6,714,384,022.23/74,820.63
6. Step 6: Final answer
   x = 89,739.74