Finding the Fourth Proportional to 42,679,406.52, 64,019,277.86 and 10,331,257.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,679,406.52 : 64,019,277.86 = 10,331,257.10 : x
2. Step 2: Convert to fraction form
   42,679,406.52/64,019,277.86 = 10,331,257.10/x
3. Step 3: Cross multiply
   42,679,406.52x = 64,019,277.86 × 10,331,257.10
4. Step 4: Simplify right side
   42,679,406.52x = 661,399,618,556,245.12
5. Step 5: Solve for x
   x = 661,399,618,556,245.12/42,679,406.52
6. Step 6: Final answer
   x = 15,496,926.33