Finding the Fourth Proportional to 101,101.32, 139,518.86 and 55,779.67

Step by Step Solution

1. Step 1: Write the proportion equation
   101,101.32 : 139,518.86 = 55,779.67 : x
2. Step 2: Convert to fraction form
   101,101.32/139,518.86 = 55,779.67/x
3. Step 3: Cross multiply
   101,101.32x = 139,518.86 × 55,779.67
4. Step 4: Simplify right side
   101,101.32x = 7,782,315,969.58
5. Step 5: Solve for x
   x = 7,782,315,969.58/101,101.32
6. Step 6: Final answer
   x = 76,975.41