Finding the Fourth Proportional to 55,507.53, 76,507.10 and 42,074.49

Step by Step Solution

1. Step 1: Write the proportion equation
   55,507.53 : 76,507.10 = 42,074.49 : x
2. Step 2: Convert to fraction form
   55,507.53/76,507.10 = 42,074.49/x
3. Step 3: Cross multiply
   55,507.53x = 76,507.10 × 42,074.49
4. Step 4: Simplify right side
   55,507.53x = 3,218,997,003.51
5. Step 5: Solve for x
   x = 3,218,997,003.51/55,507.53
6. Step 6: Final answer
   x = 57,992.08