Finding the Fourth Proportional to 101,005.30, 139,381.04 and 55,680.94

Step by Step Solution

1. Step 1: Write the proportion equation
   101,005.30 : 139,381.04 = 55,680.94 : x
2. Step 2: Convert to fraction form
   101,005.30/139,381.04 = 55,680.94/x
3. Step 3: Cross multiply
   101,005.30x = 139,381.04 × 55,680.94
4. Step 4: Simplify right side
   101,005.30x = 7,760,867,325.38
5. Step 5: Solve for x
   x = 7,760,867,325.38/101,005.30
6. Step 6: Final answer
   x = 76,836.24