Finding the Fourth Proportional to 117,386,356.47, 161,990,089.55 and 65,174,049.69

Step by Step Solution

1. Step 1: Write the proportion equation
   117,386,356.47 : 161,990,089.55 = 65,174,049.69 : x
2. Step 2: Convert to fraction form
   117,386,356.47/161,990,089.55 = 65,174,049.69/x
3. Step 3: Cross multiply
   117,386,356.47x = 161,990,089.55 × 65,174,049.69
4. Step 4: Simplify right side
   117,386,356.47x = 10,557,550,144,930,320
5. Step 5: Solve for x
   x = 10,557,550,144,930,320/117,386,356.47
6. Step 6: Final answer
   x = 89,938,477.20