Finding the Fourth Proportional to 105,521,366.98, 158,048,187.23 and 81,080,388.10

Step by Step Solution

1. Step 1: Write the proportion equation
   105,521,366.98 : 158,048,187.23 = 81,080,388.10 : x
2. Step 2: Convert to fraction form
   105,521,366.98/158,048,187.23 = 81,080,388.10/x
3. Step 3: Cross multiply
   105,521,366.98x = 158,048,187.23 × 81,080,388.10
4. Step 4: Simplify right side
   105,521,366.98x = 12,814,608,359,109,862
5. Step 5: Solve for x
   x = 12,814,608,359,109,862/105,521,366.98
6. Step 6: Final answer
   x = 121,440,886.58