Finding the Fourth Proportional to 55,958.42, 77,222.37 and 30,807.90

Step by Step Solution

1. Step 1: Write the proportion equation
   55,958.42 : 77,222.37 = 30,807.90 : x
2. Step 2: Convert to fraction form
   55,958.42/77,222.37 = 30,807.90/x
3. Step 3: Cross multiply
   55,958.42x = 77,222.37 × 30,807.90
4. Step 4: Simplify right side
   55,958.42x = 2,379,059,052.72
5. Step 5: Solve for x
   x = 2,379,059,052.72/55,958.42
6. Step 6: Final answer
   x = 42,514.76