Finding the Fourth Proportional to 78,724,878.01, 118,086,895.53 and 20,432,513.38

Step by Step Solution

1. Step 1: Write the proportion equation
   78,724,878.01 : 118,086,895.53 = 20,432,513.38 : x
2. Step 2: Convert to fraction form
   78,724,878.01/118,086,895.53 = 20,432,513.38/x
3. Step 3: Cross multiply
   78,724,878.01x = 118,086,895.53 × 20,432,513.38
4. Step 4: Simplify right side
   78,724,878.01x = 2,412,812,072,441,686.50
5. Step 5: Solve for x
   x = 2,412,812,072,441,686.50/78,724,878.01
6. Step 6: Final answer
   x = 30,648,660.67