Finding the Fourth Proportional to 42,707,567.80, 64,061,351.70 and 42,309,436.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,707,567.80 : 64,061,351.70 = 42,309,436.60 : x
2. Step 2: Convert to fraction form
   42,707,567.80/64,061,351.70 = 42,309,436.60/x
3. Step 3: Cross multiply
   42,707,567.80x = 64,061,351.70 × 42,309,436.60
4. Step 4: Simplify right side
   42,707,567.80x = 2,710,399,698,261,452.50
5. Step 5: Solve for x
   x = 2,710,399,698,261,452.50/42,707,567.80
6. Step 6: Final answer
   x = 63,464,154.90