Finding the Fourth Proportional to 99,043, 136,618.86 and 65,055.40

Step by Step Solution

1. Step 1: Write the proportion equation
   99,043 : 136,618.86 = 65,055.40 : x
2. Step 2: Convert to fraction form
   99,043/136,618.86 = 65,055.40/x
3. Step 3: Cross multiply
   99,043x = 136,618.86 × 65,055.40
4. Step 4: Simplify right side
   99,043x = 8,887,794,584.84
5. Step 5: Solve for x
   x = 8,887,794,584.84/99,043
6. Step 6: Final answer
   x = 89,736.73