Finding the Fourth Proportional to 99,674,908.37, 137,551,400.73 and 55,020,907.61

Step by Step Solution

1. Step 1: Write the proportion equation
   99,674,908.37 : 137,551,400.73 = 55,020,907.61 : x
2. Step 2: Convert to fraction form
   99,674,908.37/137,551,400.73 = 55,020,907.61/x
3. Step 3: Cross multiply
   99,674,908.37x = 137,551,400.73 × 55,020,907.61
4. Step 4: Simplify right side
   99,674,908.37x = 7,568,202,911,019,477
5. Step 5: Solve for x
   x = 7,568,202,911,019,477/99,674,908.37
6. Step 6: Final answer
   x = 75,928,867.50