Finding the Fourth Proportional to 156,945.51, 236,272.37 and 142,995.15

Step by Step Solution

1. Step 1: Write the proportion equation
   156,945.51 : 236,272.37 = 142,995.15 : x
2. Step 2: Convert to fraction form
   156,945.51/236,272.37 = 142,995.15/x
3. Step 3: Cross multiply
   156,945.51x = 236,272.37 × 142,995.15
4. Step 4: Simplify right side
   156,945.51x = 33,785,802,989.01
5. Step 5: Solve for x
   x = 33,785,802,989.01/156,945.51
6. Step 6: Final answer
   x = 215,270.91