Finding the Fourth Proportional to 100,105.22, 138,131.54 and 59,810.42

Step by Step Solution

1. Step 1: Write the proportion equation
   100,105.22 : 138,131.54 = 59,810.42 : x
2. Step 2: Convert to fraction form
   100,105.22/138,131.54 = 59,810.42/x
3. Step 3: Cross multiply
   100,105.22x = 138,131.54 × 59,810.42
4. Step 4: Simplify right side
   100,105.22x = 8,261,704,432.94
5. Step 5: Solve for x
   x = 8,261,704,432.94/100,105.22
6. Step 6: Final answer
   x = 82,530.21