Finding the Fourth Proportional to 152,613.60, 210,606.76 and 84,640.96

Step by Step Solution

1. Step 1: Write the proportion equation
   152,613.60 : 210,606.76 = 84,640.96 : x
2. Step 2: Convert to fraction form
   152,613.60/210,606.76 = 84,640.96/x
3. Step 3: Cross multiply
   152,613.60x = 210,606.76 × 84,640.96
4. Step 4: Simplify right side
   152,613.60x = 17,825,958,348.89
5. Step 5: Solve for x
   x = 17,825,958,348.89/152,613.60
6. Step 6: Final answer
   x = 116,804.52