Finding the Fourth Proportional to 156,270.51, 215,648.86 and 91,738.71

Step by Step Solution

1. Step 1: Write the proportion equation
   156,270.51 : 215,648.86 = 91,738.71 : x
2. Step 2: Convert to fraction form
   156,270.51/215,648.86 = 91,738.71/x
3. Step 3: Cross multiply
   156,270.51x = 215,648.86 × 91,738.71
4. Step 4: Simplify right side
   156,270.51x = 19,783,348,229.37
5. Step 5: Solve for x
   x = 19,783,348,229.37/156,270.51
6. Step 6: Final answer
   x = 126,596.81