Finding the Fourth Proportional to 101,012.04, 139,390.35 and 55,687.68

Step by Step Solution

1. Step 1: Write the proportion equation
   101,012.04 : 139,390.35 = 55,687.68 : x
2. Step 2: Convert to fraction form
   101,012.04/139,390.35 = 55,687.68/x
3. Step 3: Cross multiply
   101,012.04x = 139,390.35 × 55,687.68
4. Step 4: Simplify right side
   101,012.04x = 7,762,325,205.89
5. Step 5: Solve for x
   x = 7,762,325,205.89/101,012.04
6. Step 6: Final answer
   x = 76,845.54