Finding the Fourth Proportional to 101,002.48, 139,383.86 and 55,679.42

Step by Step Solution

1. Step 1: Write the proportion equation
   101,002.48 : 139,383.86 = 55,679.42 : x
2. Step 2: Convert to fraction form
   101,002.48/139,383.86 = 55,679.42/x
3. Step 3: Cross multiply
   101,002.48x = 139,383.86 × 55,679.42
4. Step 4: Simplify right side
   101,002.48x = 7,760,812,552.22
5. Step 5: Solve for x
   x = 7,760,812,552.22/101,002.48
6. Step 6: Final answer
   x = 76,837.84