Finding the Fourth Proportional to 78,212.06, 108,021.75 and 53,017.82

Step by Step Solution

1. Step 1: Write the proportion equation
   78,212.06 : 108,021.75 = 53,017.82 : x
2. Step 2: Convert to fraction form
   78,212.06/108,021.75 = 53,017.82/x
3. Step 3: Cross multiply
   78,212.06x = 108,021.75 × 53,017.82
4. Step 4: Simplify right side
   78,212.06x = 5,727,077,967.64
5. Step 5: Solve for x
   x = 5,727,077,967.64/78,212.06
6. Step 6: Final answer
   x = 73,225.00