Finding the Fourth Proportional to 101,758.10, 152,581.21 and 80,832.15

Step by Step Solution

1. Step 1: Write the proportion equation
   101,758.10 : 152,581.21 = 80,832.15 : x
2. Step 2: Convert to fraction form
   101,758.10/152,581.21 = 80,832.15/x
3. Step 3: Cross multiply
   101,758.10x = 152,581.21 × 80,832.15
4. Step 4: Simplify right side
   101,758.10x = 12,333,467,051.82
5. Step 5: Solve for x
   x = 12,333,467,051.82/101,758.10
6. Step 6: Final answer
   x = 121,203.79