Finding the Fourth Proportional to 91,986,661.89, 138,075,696 and 67,752,952.29

Step by Step Solution

1. Step 1: Write the proportion equation
   91,986,661.89 : 138,075,696 = 67,752,952.29 : x
2. Step 2: Convert to fraction form
   91,986,661.89/138,075,696 = 67,752,952.29/x
3. Step 3: Cross multiply
   91,986,661.89x = 138,075,696 × 67,752,952.29
4. Step 4: Simplify right side
   91,986,661.89x = 9,355,036,043,496,544
5. Step 5: Solve for x
   x = 9,355,036,043,496,544/91,986,661.89
6. Step 6: Final answer
   x = 101,699,918.78