Finding the Fourth Proportional to 98,564.69, 136,019.31 and 53,242.67

Step by Step Solution

1. Step 1: Write the proportion equation
   98,564.69 : 136,019.31 = 53,242.67 : x
2. Step 2: Convert to fraction form
   98,564.69/136,019.31 = 53,242.67/x
3. Step 3: Cross multiply
   98,564.69x = 136,019.31 × 53,242.67
4. Step 4: Simplify right side
   98,564.69x = 7,242,030,555.86
5. Step 5: Solve for x
   x = 7,242,030,555.86/98,564.69
6. Step 6: Final answer
   x = 73,474.90