Finding the Fourth Proportional to 152,469.34, 210,404.54 and 84,485.72

Step by Step Solution

1. Step 1: Write the proportion equation
   152,469.34 : 210,404.54 = 84,485.72 : x
2. Step 2: Convert to fraction form
   152,469.34/210,404.54 = 84,485.72/x
3. Step 3: Cross multiply
   152,469.34x = 210,404.54 × 84,485.72
4. Step 4: Simplify right side
   152,469.34x = 17,776,178,212.36
5. Step 5: Solve for x
   x = 17,776,178,212.36/152,469.34
6. Step 6: Final answer
   x = 116,588.54