Finding the Fourth Proportional to 99,002, 136,622.76 and 54,290

Step by Step Solution

1. Step 1: Write the proportion equation
   99,002 : 136,622.76 = 54,290 : x
2. Step 2: Convert to fraction form
   99,002/136,622.76 = 54,290/x
3. Step 3: Cross multiply
   99,002x = 136,622.76 × 54,290
4. Step 4: Simplify right side
   99,002x = 7,417,249,640.40
5. Step 5: Solve for x
   x = 7,417,249,640.40/99,002
6. Step 6: Final answer
   x = 74,920.20