Finding the Fourth Proportional to 111,142.08, 166,773.60 and 61,159.68

Step by Step Solution

1. Step 1: Write the proportion equation
   111,142.08 : 166,773.60 = 61,159.68 : x
2. Step 2: Convert to fraction form
   111,142.08/166,773.60 = 61,159.68/x
3. Step 3: Cross multiply
   111,142.08x = 166,773.60 × 61,159.68
4. Step 4: Simplify right side
   111,142.08x = 10,199,820,008.45
5. Step 5: Solve for x
   x = 10,199,820,008.45/111,142.08
6. Step 6: Final answer
   x = 91,772.80