Finding the Fourth Proportional to 42,784,162.72, 64,195,839.68 and 18,530,507.68

Step by Step Solution

1. Step 1: Write the proportion equation
   42,784,162.72 : 64,195,839.68 = 18,530,507.68 : x
2. Step 2: Convert to fraction form
   42,784,162.72/64,195,839.68 = 18,530,507.68/x
3. Step 3: Cross multiply
   42,784,162.72x = 64,195,839.68 × 18,530,507.68
4. Step 4: Simplify right side
   42,784,162.72x = 1,189,581,500,214,288.75
5. Step 5: Solve for x
   x = 1,189,581,500,214,288.75/42,784,162.72
6. Step 6: Final answer
   x = 27,804,248.69