Finding the Fourth Proportional to 111,097.78, 166,572.51 and 61,201.78

Step by Step Solution

1. Step 1: Write the proportion equation
   111,097.78 : 166,572.51 = 61,201.78 : x
2. Step 2: Convert to fraction form
   111,097.78/166,572.51 = 61,201.78/x
3. Step 3: Cross multiply
   111,097.78x = 166,572.51 × 61,201.78
4. Step 4: Simplify right side
   111,097.78x = 10,194,534,111.07
5. Step 5: Solve for x
   x = 10,194,534,111.07/111,097.78
6. Step 6: Final answer
   x = 91,761.82