Finding the Fourth Proportional to 111,993,852.43, 154,552,176.93 and 64,978,920.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,993,852.43 : 154,552,176.93 = 64,978,920.10 : x
2. Step 2: Convert to fraction form
   111,993,852.43/154,552,176.93 = 64,978,920.10/x
3. Step 3: Cross multiply
   111,993,852.43x = 154,552,176.93 × 64,978,920.10
4. Step 4: Simplify right side
   111,993,852.43x = 10,042,633,556,015,534
5. Step 5: Solve for x
   x = 10,042,633,556,015,534/111,993,852.43
6. Step 6: Final answer
   x = 89,671,293.01