Finding the Fourth Proportional to 40,989,928.69, 61,483,912.95 and 13,323,811.42

Step by Step Solution

1. Step 1: Write the proportion equation
   40,989,928.69 : 61,483,912.95 = 13,323,811.42 : x
2. Step 2: Convert to fraction form
   40,989,928.69/61,483,912.95 = 13,323,811.42/x
3. Step 3: Cross multiply
   40,989,928.69x = 61,483,912.95 × 13,323,811.42
4. Step 4: Simplify right side
   40,989,928.69x = 819,200,061,509,495.88
5. Step 5: Solve for x
   x = 819,200,061,509,495.88/40,989,928.69
6. Step 6: Final answer
   x = 19,985,398.55