Finding the Fourth Proportional to 42,772,570.98, 64,133,234.37 and 13,613,814.81

Step by Step Solution

1. Step 1: Write the proportion equation
   42,772,570.98 : 64,133,234.37 = 13,613,814.81 : x
2. Step 2: Convert to fraction form
   42,772,570.98/64,133,234.37 = 13,613,814.81/x
3. Step 3: Cross multiply
   42,772,570.98x = 64,133,234.37 × 13,613,814.81
4. Step 4: Simplify right side
   42,772,570.98x = 873,097,975,879,507
5. Step 5: Solve for x
   x = 873,097,975,879,507/42,772,570.98
6. Step 6: Final answer
   x = 20,412,567.12