Finding the Fourth Proportional to 250,019.51, 345,026.91 and 135,298.15

Step by Step Solution

1. Step 1: Write the proportion equation
   250,019.51 : 345,026.91 = 135,298.15 : x
2. Step 2: Convert to fraction form
   250,019.51/345,026.91 = 135,298.15/x
3. Step 3: Cross multiply
   250,019.51x = 345,026.91 × 135,298.15
4. Step 4: Simplify right side
   250,019.51x = 46,681,501,630.63
5. Step 5: Solve for x
   x = 46,681,501,630.63/250,019.51
6. Step 6: Final answer
   x = 186,711.44