Finding the Fourth Proportional to 101,045.61, 139,440.63 and 55,722.31

Step by Step Solution

1. Step 1: Write the proportion equation
   101,045.61 : 139,440.63 = 55,722.31 : x
2. Step 2: Convert to fraction form
   101,045.61/139,440.63 = 55,722.31/x
3. Step 3: Cross multiply
   101,045.61x = 139,440.63 × 55,722.31
4. Step 4: Simplify right side
   101,045.61x = 7,769,954,011.46
5. Step 5: Solve for x
   x = 7,769,954,011.46/101,045.61
6. Step 6: Final answer
   x = 76,895.51