Finding the Fourth Proportional to 42,764,216.88, 64,142,978.16 and 12,057,556.08

Step by Step Solution

1. Step 1: Write the proportion equation
   42,764,216.88 : 64,142,978.16 = 12,057,556.08 : x
2. Step 2: Convert to fraction form
   42,764,216.88/64,142,978.16 = 12,057,556.08/x
3. Step 3: Cross multiply
   42,764,216.88x = 64,142,978.16 × 12,057,556.08
4. Step 4: Simplify right side
   42,764,216.88x = 773,407,556,302,415.12
5. Step 5: Solve for x
   x = 773,407,556,302,415.12/42,764,216.88
6. Step 6: Final answer
   x = 18,085,390.37