Finding the Fourth Proportional to 101,039.57, 139,435.59 and 55,719.16

Step by Step Solution

1. Step 1: Write the proportion equation
   101,039.57 : 139,435.59 = 55,719.16 : x
2. Step 2: Convert to fraction form
   101,039.57/139,435.59 = 55,719.16/x
3. Step 3: Cross multiply
   101,039.57x = 139,435.59 × 55,719.16
4. Step 4: Simplify right side
   101,039.57x = 7,769,233,809.26
5. Step 5: Solve for x
   x = 7,769,233,809.26/101,039.57
6. Step 6: Final answer
   x = 76,892.98