Finding the Fourth Proportional to 112,791.98, 155,642.60 and 65,036.10

Step by Step Solution

1. Step 1: Write the proportion equation
   112,791.98 : 155,642.60 = 65,036.10 : x
2. Step 2: Convert to fraction form
   112,791.98/155,642.60 = 65,036.10/x
3. Step 3: Cross multiply
   112,791.98x = 155,642.60 × 65,036.10
4. Step 4: Simplify right side
   112,791.98x = 10,122,387,697.86
5. Step 5: Solve for x
   x = 10,122,387,697.86/112,791.98
6. Step 6: Final answer
   x = 89,743.86