Finding the Fourth Proportional to 49,209.60, 73,412.16 and 42,297.60

Step by Step Solution

1. Step 1: Write the proportion equation
   49,209.60 : 73,412.16 = 42,297.60 : x
2. Step 2: Convert to fraction form
   49,209.60/73,412.16 = 42,297.60/x
3. Step 3: Cross multiply
   49,209.60x = 73,412.16 × 42,297.60
4. Step 4: Simplify right side
   49,209.60x = 3,105,158,178.82
5. Step 5: Solve for x
   x = 3,105,158,178.82/49,209.60
6. Step 6: Final answer
   x = 63,100.66