Finding the Fourth Proportional to 250,150.74, 345,208.59 and 135,430.59

Step by Step Solution

1. Step 1: Write the proportion equation
   250,150.74 : 345,208.59 = 135,430.59 : x
2. Step 2: Convert to fraction form
   250,150.74/345,208.59 = 135,430.59/x
3. Step 3: Cross multiply
   250,150.74x = 345,208.59 × 135,430.59
4. Step 4: Simplify right side
   250,150.74x = 46,751,803,016.77
5. Step 5: Solve for x
   x = 46,751,803,016.77/250,150.74
6. Step 6: Final answer
   x = 186,894.52