Finding the Fourth Proportional to 137,870.01, 190,212.16 and 90,151.29

Step by Step Solution

1. Step 1: Write the proportion equation
   137,870.01 : 190,212.16 = 90,151.29 : x
2. Step 2: Convert to fraction form
   137,870.01/190,212.16 = 90,151.29/x
3. Step 3: Cross multiply
   137,870.01x = 190,212.16 × 90,151.29
4. Step 4: Simplify right side
   137,870.01x = 17,147,871,597.69
5. Step 5: Solve for x
   x = 17,147,871,597.69/137,870.01
6. Step 6: Final answer
   x = 124,377.10