Finding the Fourth Proportional to 99,804,552.10, 149,482,879.35 and 81,888,648.10

Step by Step Solution

1. Step 1: Write the proportion equation
   99,804,552.10 : 149,482,879.35 = 81,888,648.10 : x
2. Step 2: Convert to fraction form
   99,804,552.10/149,482,879.35 = 81,888,648.10/x
3. Step 3: Cross multiply
   99,804,552.10x = 149,482,879.35 × 81,888,648.10
4. Step 4: Simplify right side
   99,804,552.10x = 12,240,950,904,066,906
5. Step 5: Solve for x
   x = 12,240,950,904,066,906/99,804,552.10
6. Step 6: Final answer
   x = 122,649,224.37