Finding the Fourth Proportional to 101,302.62, 139,797.27 and 55,979.34

Step by Step Solution

1. Step 1: Write the proportion equation
   101,302.62 : 139,797.27 = 55,979.34 : x
2. Step 2: Convert to fraction form
   101,302.62/139,797.27 = 55,979.34/x
3. Step 3: Cross multiply
   101,302.62x = 139,797.27 × 55,979.34
4. Step 4: Simplify right side
   101,302.62x = 7,825,758,908.40
5. Step 5: Solve for x
   x = 7,825,758,908.40/101,302.62
6. Step 6: Final answer
   x = 77,251.30