Finding the Fourth Proportional to 132,978,124.80, 199,485,849.60 and 42,092,236.80

Step by Step Solution

1. Step 1: Write the proportion equation
   132,978,124.80 : 199,485,849.60 = 42,092,236.80 : x
2. Step 2: Convert to fraction form
   132,978,124.80/199,485,849.60 = 42,092,236.80/x
3. Step 3: Cross multiply
   132,978,124.80x = 199,485,849.60 × 42,092,236.80
4. Step 4: Simplify right side
   132,978,124.80x = 8,396,805,619,612,384
5. Step 5: Solve for x
   x = 8,396,805,619,612,384/132,978,124.80
6. Step 6: Final answer
   x = 63,144,262.50