Finding the Fourth Proportional to 20,564,196.59, 30,662,445.49 and 19,999,208.37

Step by Step Solution

1. Step 1: Write the proportion equation
   20,564,196.59 : 30,662,445.49 = 19,999,208.37 : x
2. Step 2: Convert to fraction form
   20,564,196.59/30,662,445.49 = 19,999,208.37/x
3. Step 3: Cross multiply
   20,564,196.59x = 30,662,445.49 × 19,999,208.37
4. Step 4: Simplify right side
   20,564,196.59x = 613,224,636,665,758.50
5. Step 5: Solve for x
   x = 613,224,636,665,758.50/20,564,196.59
6. Step 6: Final answer
   x = 29,820,014.32