Finding the Fourth Proportional to 171,828.72, 257,779.98 and 51,875.58

Step by Step Solution

1. Step 1: Write the proportion equation
   171,828.72 : 257,779.98 = 51,875.58 : x
2. Step 2: Convert to fraction form
   171,828.72/257,779.98 = 51,875.58/x
3. Step 3: Cross multiply
   171,828.72x = 257,779.98 × 51,875.58
4. Step 4: Simplify right side
   171,828.72x = 13,372,485,974.89
5. Step 5: Solve for x
   x = 13,372,485,974.89/171,828.72
6. Step 6: Final answer
   x = 77,824.51