Finding the Fourth Proportional to 106,646.82, 147,189.72 and 81,111.97

Step by Step Solution

1. Step 1: Write the proportion equation
   106,646.82 : 147,189.72 = 81,111.97 : x
2. Step 2: Convert to fraction form
   106,646.82/147,189.72 = 81,111.97/x
3. Step 3: Cross multiply
   106,646.82x = 147,189.72 × 81,111.97
4. Step 4: Simplify right side
   106,646.82x = 11,938,848,152.95
5. Step 5: Solve for x
   x = 11,938,848,152.95/106,646.82
6. Step 6: Final answer
   x = 111,947.53