Finding the Fourth Proportional to 78,285.48, 108,123.69 and 51,547.51

Step by Step Solution

1. Step 1: Write the proportion equation
   78,285.48 : 108,123.69 = 51,547.51 : x
2. Step 2: Convert to fraction form
   78,285.48/108,123.69 = 51,547.51/x
3. Step 3: Cross multiply
   78,285.48x = 108,123.69 × 51,547.51
4. Step 4: Simplify right side
   78,285.48x = 5,573,506,991.51
5. Step 5: Solve for x
   x = 5,573,506,991.51/78,285.48
6. Step 6: Final answer
   x = 71,194.65