Finding the Fourth Proportional to 101,100.98, 139,519.83 and 55,779.50

Step by Step Solution

1. Step 1: Write the proportion equation
   101,100.98 : 139,519.83 = 55,779.50 : x
2. Step 2: Convert to fraction form
   101,100.98/139,519.83 = 55,779.50/x
3. Step 3: Cross multiply
   101,100.98x = 139,519.83 × 55,779.50
4. Step 4: Simplify right side
   101,100.98x = 7,782,346,357.49
5. Step 5: Solve for x
   x = 7,782,346,357.49/101,100.98
6. Step 6: Final answer
   x = 76,975.97