Finding the Fourth Proportional to 91,806,572.89, 137,645,940.60 and 40,660,866.01

Step by Step Solution

1. Step 1: Write the proportion equation
   91,806,572.89 : 137,645,940.60 = 40,660,866.01 : x
2. Step 2: Convert to fraction form
   91,806,572.89/137,645,940.60 = 40,660,866.01/x
3. Step 3: Cross multiply
   91,806,572.89x = 137,645,940.60 × 40,660,866.01
4. Step 4: Simplify right side
   91,806,572.89x = 5,596,803,147,557,018
5. Step 5: Solve for x
   x = 5,596,803,147,557,018/91,806,572.89
6. Step 6: Final answer
   x = 60,962,989.59