Finding the Fourth Proportional to 101,127.79, 139,555.40 and 55,806.18

Step by Step Solution

1. Step 1: Write the proportion equation
   101,127.79 : 139,555.40 = 55,806.18 : x
2. Step 2: Convert to fraction form
   101,127.79/139,555.40 = 55,806.18/x
3. Step 3: Cross multiply
   101,127.79x = 139,555.40 × 55,806.18
4. Step 4: Simplify right side
   101,127.79x = 7,788,053,772.37
5. Step 5: Solve for x
   x = 7,788,053,772.37/101,127.79
6. Step 6: Final answer
   x = 77,012.00