Finding the Fourth Proportional to 101,139.72, 139,580.73 and 55,826.70

Step by Step Solution

1. Step 1: Write the proportion equation
   101,139.72 : 139,580.73 = 55,826.70 : x
2. Step 2: Convert to fraction form
   101,139.72/139,580.73 = 55,826.70/x
3. Step 3: Cross multiply
   101,139.72x = 139,580.73 × 55,826.70
4. Step 4: Simplify right side
   101,139.72x = 7,792,331,539.49
5. Step 5: Solve for x
   x = 7,792,331,539.49/101,139.72
6. Step 6: Final answer
   x = 77,045.22