Finding the Fourth Proportional to 99,804,930.35, 149,483,446.72 and 81,889,026.35

Step by Step Solution

1. Step 1: Write the proportion equation
   99,804,930.35 : 149,483,446.72 = 81,889,026.35 : x
2. Step 2: Convert to fraction form
   99,804,930.35/149,483,446.72 = 81,889,026.35/x
3. Step 3: Cross multiply
   99,804,930.35x = 149,483,446.72 × 81,889,026.35
4. Step 4: Simplify right side
   99,804,930.35x = 12,241,053,907,342,900
5. Step 5: Solve for x
   x = 12,241,053,907,342,900/99,804,930.35
6. Step 6: Final answer
   x = 122,649,791.59