Finding the Fourth Proportional to 156,327.72, 215,732.28 and 91,784.28

Step by Step Solution

1. Step 1: Write the proportion equation
   156,327.72 : 215,732.28 = 91,784.28 : x
2. Step 2: Convert to fraction form
   156,327.72/215,732.28 = 91,784.28/x
3. Step 3: Cross multiply
   156,327.72x = 215,732.28 × 91,784.28
4. Step 4: Simplify right side
   156,327.72x = 19,800,831,992.56
5. Step 5: Solve for x
   x = 19,800,831,992.56/156,327.72
6. Step 6: Final answer
   x = 126,662.32