Finding the Fourth Proportional to 112,839.93, 155,713.32 and 65,090.43

Step by Step Solution

1. Step 1: Write the proportion equation
   112,839.93 : 155,713.32 = 65,090.43 : x
2. Step 2: Convert to fraction form
   112,839.93/155,713.32 = 65,090.43/x
3. Step 3: Cross multiply
   112,839.93x = 155,713.32 × 65,090.43
4. Step 4: Simplify right side
   112,839.93x = 10,135,446,955.53
5. Step 5: Solve for x
   x = 10,135,446,955.53/112,839.93
6. Step 6: Final answer
   x = 89,821.46