Finding the Fourth Proportional to 156,085.72, 215,408.04 and 88,114.20

Step by Step Solution

1. Step 1: Write the proportion equation
   156,085.72 : 215,408.04 = 88,114.20 : x
2. Step 2: Convert to fraction form
   156,085.72/215,408.04 = 88,114.20/x
3. Step 3: Cross multiply
   156,085.72x = 215,408.04 × 88,114.20
4. Step 4: Simplify right side
   156,085.72x = 18,980,507,118.17
5. Step 5: Solve for x
   x = 18,980,507,118.17/156,085.72
6. Step 6: Final answer
   x = 121,603.10