Finding the Fourth Proportional to 137,756.33, 190,054.82 and 90,037.20

Step by Step Solution

1. Step 1: Write the proportion equation
   137,756.33 : 190,054.82 = 90,037.20 : x
2. Step 2: Convert to fraction form
   137,756.33/190,054.82 = 90,037.20/x
3. Step 3: Cross multiply
   137,756.33x = 190,054.82 × 90,037.20
4. Step 4: Simplify right side
   137,756.33x = 17,112,003,389.12
5. Step 5: Solve for x
   x = 17,112,003,389.12/137,756.33
6. Step 6: Final answer
   x = 124,219.37