Finding the Fourth Proportional to 101,223.67, 139,690.88 and 55,901.56

Step by Step Solution

1. Step 1: Write the proportion equation
   101,223.67 : 139,690.88 = 55,901.56 : x
2. Step 2: Convert to fraction form
   101,223.67/139,690.88 = 55,901.56/x
3. Step 3: Cross multiply
   101,223.67x = 139,690.88 × 55,901.56
4. Step 4: Simplify right side
   101,223.67x = 7,808,938,109.77
5. Step 5: Solve for x
   x = 7,808,938,109.77/101,223.67
6. Step 6: Final answer
   x = 77,145.38