Finding the Fourth Proportional to 42,963,610.72, 64,451,355.36 and 13,818,274.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,963,610.72 : 64,451,355.36 = 13,818,274.60 : x
2. Step 2: Convert to fraction form
   42,963,610.72/64,451,355.36 = 13,818,274.60/x
3. Step 3: Cross multiply
   42,963,610.72x = 64,451,355.36 × 13,818,274.60
4. Step 4: Simplify right side
   42,963,610.72x = 890,606,526,706,661.88
5. Step 5: Solve for x
   x = 890,606,526,706,661.88/42,963,610.72
6. Step 6: Final answer
   x = 20,729,322.14