Finding the Fourth Proportional to 85,667.10, 118,218.06 and 47,428.35

Step by Step Solution

1. Step 1: Write the proportion equation
   85,667.10 : 118,218.06 = 47,428.35 : x
2. Step 2: Convert to fraction form
   85,667.10/118,218.06 = 47,428.35/x
3. Step 3: Cross multiply
   85,667.10x = 118,218.06 × 47,428.35
4. Step 4: Simplify right side
   85,667.10x = 5,606,887,526.00
5. Step 5: Solve for x
   x = 5,606,887,526.00/85,667.10
6. Step 6: Final answer
   x = 65,449.72