Finding the Fourth Proportional to 165,450.90, 248,152.92 and 53,116.34

Step by Step Solution

1. Step 1: Write the proportion equation
   165,450.90 : 248,152.92 = 53,116.34 : x
2. Step 2: Convert to fraction form
   165,450.90/248,152.92 = 53,116.34/x
3. Step 3: Cross multiply
   165,450.90x = 248,152.92 × 53,116.34
4. Step 4: Simplify right side
   165,450.90x = 13,180,974,870.71
5. Step 5: Solve for x
   x = 13,180,974,870.71/165,450.90
6. Step 6: Final answer
   x = 79,666.99