Finding the Fourth Proportional to 100,805.22, 139,106.18 and 55,482.05

Step by Step Solution

1. Step 1: Write the proportion equation
   100,805.22 : 139,106.18 = 55,482.05 : x
2. Step 2: Convert to fraction form
   100,805.22/139,106.18 = 55,482.05/x
3. Step 3: Cross multiply
   100,805.22x = 139,106.18 × 55,482.05
4. Step 4: Simplify right side
   100,805.22x = 7,717,895,061.13
5. Step 5: Solve for x
   x = 7,717,895,061.13/100,805.22
6. Step 6: Final answer
   x = 76,562.45