Finding the Fourth Proportional to 139,581,142.62, 209,379,587.16 and 42,540,016.02

Step by Step Solution

1. Step 1: Write the proportion equation
   139,581,142.62 : 209,379,587.16 = 42,540,016.02 : x
2. Step 2: Convert to fraction form
   139,581,142.62/209,379,587.16 = 42,540,016.02/x
3. Step 3: Cross multiply
   139,581,142.62x = 209,379,587.16 × 42,540,016.02
4. Step 4: Simplify right side
   139,581,142.62x = 8,907,010,992,047,387
5. Step 5: Solve for x
   x = 8,907,010,992,047,387/139,581,142.62
6. Step 6: Final answer
   x = 63,812,423.55