Finding the Fourth Proportional to 116,439.60, 174,736.20 and 42,567.60

Step by Step Solution

1. Step 1: Write the proportion equation
   116,439.60 : 174,736.20 = 42,567.60 : x
2. Step 2: Convert to fraction form
   116,439.60/174,736.20 = 42,567.60/x
3. Step 3: Cross multiply
   116,439.60x = 174,736.20 × 42,567.60
4. Step 4: Simplify right side
   116,439.60x = 7,438,100,667.12
5. Step 5: Solve for x
   x = 7,438,100,667.12/116,439.60
6. Step 6: Final answer
   x = 63,879.48