Finding the Fourth Proportional to 55,704.86, 83,421 and 50,307.42

Step by Step Solution

1. Step 1: Write the proportion equation
   55,704.86 : 83,421 = 50,307.42 : x
2. Step 2: Convert to fraction form
   55,704.86/83,421 = 50,307.42/x
3. Step 3: Cross multiply
   55,704.86x = 83,421 × 50,307.42
4. Step 4: Simplify right side
   55,704.86x = 4,196,695,283.82
5. Step 5: Solve for x
   x = 4,196,695,283.82/55,704.86
6. Step 6: Final answer
   x = 75,338.05