Finding the Fourth Proportional to 63,139,209, 86,499,268.88 and 60,778,606.08

Step by Step Solution

1. Step 1: Write the proportion equation
   63,139,209 : 86,499,268.88 = 60,778,606.08 : x
2. Step 2: Convert to fraction form
   63,139,209/86,499,268.88 = 60,778,606.08/x
3. Step 3: Cross multiply
   63,139,209x = 86,499,268.88 × 60,778,606.08
4. Step 4: Simplify right side
   63,139,209x = 5,257,304,989,617,469
5. Step 5: Solve for x
   x = 5,257,304,989,617,469/63,139,209
6. Step 6: Final answer
   x = 83,265,297.00