Finding the Fourth Proportional to 156,159, 215,499.42 and 89,089.56

Step by Step Solution

1. Step 1: Write the proportion equation
   156,159 : 215,499.42 = 89,089.56 : x
2. Step 2: Convert to fraction form
   156,159/215,499.42 = 89,089.56/x
3. Step 3: Cross multiply
   156,159x = 215,499.42 × 89,089.56
4. Step 4: Simplify right side
   156,159x = 19,198,748,508.06
5. Step 5: Solve for x
   x = 19,198,748,508.06/156,159
6. Step 6: Final answer
   x = 122,943.59