Finding the Fourth Proportional to 120,236,084.65, 165,925,103.89 and 65,230,760.17

Step by Step Solution

1. Step 1: Write the proportion equation
   120,236,084.65 : 165,925,103.89 = 65,230,760.17 : x
2. Step 2: Convert to fraction form
   120,236,084.65/165,925,103.89 = 65,230,760.17/x
3. Step 3: Cross multiply
   120,236,084.65x = 165,925,103.89 × 65,230,760.17
4. Step 4: Simplify right side
   120,236,084.65x = 10,823,420,656,875,144
5. Step 5: Solve for x
   x = 10,823,420,656,875,144/120,236,084.65
6. Step 6: Final answer
   x = 90,018,073.10