Finding the Fourth Proportional to 101,019.22, 139,407.50 and 55,698.85

Step by Step Solution

1. Step 1: Write the proportion equation
   101,019.22 : 139,407.50 = 55,698.85 : x
2. Step 2: Convert to fraction form
   101,019.22/139,407.50 = 55,698.85/x
3. Step 3: Cross multiply
   101,019.22x = 139,407.50 × 55,698.85
4. Step 4: Simplify right side
   101,019.22x = 7,764,837,431.38
5. Step 5: Solve for x
   x = 7,764,837,431.38/101,019.22
6. Step 6: Final answer
   x = 76,864.95