Finding the Fourth Proportional to 42,893,271.11, 64,303,744.60 and 18,613,907.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,893,271.11 : 64,303,744.60 = 18,613,907.88 : x
2. Step 2: Convert to fraction form
   42,893,271.11/64,303,744.60 = 18,613,907.88/x
3. Step 3: Cross multiply
   42,893,271.11x = 64,303,744.60 × 18,613,907.88
4. Step 4: Simplify right side
   42,893,271.11x = 1,196,943,978,323,447.50
5. Step 5: Solve for x
   x = 1,196,943,978,323,447.50/42,893,271.11
6. Step 6: Final answer
   x = 27,905,168.98