Finding the Fourth Proportional to 99,145, 136,936.74 and 67,258.54

Step by Step Solution

1. Step 1: Write the proportion equation
   99,145 : 136,936.74 = 67,258.54 : x
2. Step 2: Convert to fraction form
   99,145/136,936.74 = 67,258.54/x
3. Step 3: Cross multiply
   99,145x = 136,936.74 × 67,258.54
4. Step 4: Simplify right side
   99,145x = 9,210,165,204.76
5. Step 5: Solve for x
   x = 9,210,165,204.76/99,145
6. Step 6: Final answer
   x = 92,895.91