Finding the Fourth Proportional to 156,327.72, 215,722 and 99,733

Step by Step Solution

1. Step 1: Write the proportion equation
   156,327.72 : 215,722 = 99,733 : x
2. Step 2: Convert to fraction form
   156,327.72/215,722 = 99,733/x
3. Step 3: Cross multiply
   156,327.72x = 215,722 × 99,733
4. Step 4: Simplify right side
   156,327.72x = 21,514,602,226
5. Step 5: Solve for x
   x = 21,514,602,226/156,327.72
6. Step 6: Final answer
   x = 137,625.00