Finding the Fourth Proportional to 101,001.72, 139,382.37 and 55,680.48

Step by Step Solution

1. Step 1: Write the proportion equation
   101,001.72 : 139,382.37 = 55,680.48 : x
2. Step 2: Convert to fraction form
   101,001.72/139,382.37 = 55,680.48/x
3. Step 3: Cross multiply
   101,001.72x = 139,382.37 × 55,680.48
4. Step 4: Simplify right side
   101,001.72x = 7,760,877,265.14
5. Step 5: Solve for x
   x = 7,760,877,265.14/101,001.72
6. Step 6: Final answer
   x = 76,839.06