Finding the Fourth Proportional to 101,009.36, 139,387.38 and 55,687.34

Step by Step Solution

1. Step 1: Write the proportion equation
   101,009.36 : 139,387.38 = 55,687.34 : x
2. Step 2: Convert to fraction form
   101,009.36/139,387.38 = 55,687.34/x
3. Step 3: Cross multiply
   101,009.36x = 139,387.38 × 55,687.34
4. Step 4: Simplify right side
   101,009.36x = 7,762,112,421.77
5. Step 5: Solve for x
   x = 7,762,112,421.77/101,009.36
6. Step 6: Final answer
   x = 76,845.48