Finding the Fourth Proportional to 100,443.42, 138,601.82 and 60,156.15

Step by Step Solution

1. Step 1: Write the proportion equation
   100,443.42 : 138,601.82 = 60,156.15 : x
2. Step 2: Convert to fraction form
   100,443.42/138,601.82 = 60,156.15/x
3. Step 3: Cross multiply
   100,443.42x = 138,601.82 × 60,156.15
4. Step 4: Simplify right side
   100,443.42x = 8,337,751,181.18
5. Step 5: Solve for x
   x = 8,337,751,181.18/100,443.42
6. Step 6: Final answer
   x = 83,009.44