Finding the Fourth Proportional to 67,875.60, 101,667.60 and 56,211.60

Step by Step Solution

1. Step 1: Write the proportion equation
   67,875.60 : 101,667.60 = 56,211.60 : x
2. Step 2: Convert to fraction form
   67,875.60/101,667.60 = 56,211.60/x
3. Step 3: Cross multiply
   67,875.60x = 101,667.60 × 56,211.60
4. Step 4: Simplify right side
   67,875.60x = 5,714,898,464.16
5. Step 5: Solve for x
   x = 5,714,898,464.16/67,875.60
6. Step 6: Final answer
   x = 84,196.65