Finding the Fourth Proportional to 137,146.77, 188,841.98 and 120,055.37

Step by Step Solution

1. Step 1: Write the proportion equation
   137,146.77 : 188,841.98 = 120,055.37 : x
2. Step 2: Convert to fraction form
   137,146.77/188,841.98 = 120,055.37/x
3. Step 3: Cross multiply
   137,146.77x = 188,841.98 × 120,055.37
4. Step 4: Simplify right side
   137,146.77x = 22,671,493,136.36
5. Step 5: Solve for x
   x = 22,671,493,136.36/137,146.77
6. Step 6: Final answer
   x = 165,308.25