Finding the Fourth Proportional to 101,072.16, 139,395.60 and 75,877.92

Step by Step Solution

1. Step 1: Write the proportion equation
   101,072.16 : 139,395.60 = 75,877.92 : x
2. Step 2: Convert to fraction form
   101,072.16/139,395.60 = 75,877.92/x
3. Step 3: Cross multiply
   101,072.16x = 139,395.60 × 75,877.92
4. Step 4: Simplify right side
   101,072.16x = 10,577,048,185.15
5. Step 5: Solve for x
   x = 10,577,048,185.15/101,072.16
6. Step 6: Final answer
   x = 104,648.48