Finding the Fourth Proportional to 101,186.07, 139,641.46 and 55,870.49

Step by Step Solution

1. Step 1: Write the proportion equation
   101,186.07 : 139,641.46 = 55,870.49 : x
2. Step 2: Convert to fraction form
   101,186.07/139,641.46 = 55,870.49/x
3. Step 3: Cross multiply
   101,186.07x = 139,641.46 × 55,870.49
4. Step 4: Simplify right side
   101,186.07x = 7,801,836,794.52
5. Step 5: Solve for x
   x = 7,801,836,794.52/101,186.07
6. Step 6: Final answer
   x = 77,103.86