Finding the Fourth Proportional to 156,269.01, 215,638.41 and 88,291.89

Step by Step Solution

1. Step 1: Write the proportion equation
   156,269.01 : 215,638.41 = 88,291.89 : x
2. Step 2: Convert to fraction form
   156,269.01/215,638.41 = 88,291.89/x
3. Step 3: Cross multiply
   156,269.01x = 215,638.41 × 88,291.89
4. Step 4: Simplify right side
   156,269.01x = 19,039,122,775.49
5. Step 5: Solve for x
   x = 19,039,122,775.49/156,269.01
6. Step 6: Final answer
   x = 121,835.56