Finding the Fourth Proportional to 152,709.32, 210,731.72 and 84,725.57

Step by Step Solution

1. Step 1: Write the proportion equation
   152,709.32 : 210,731.72 = 84,725.57 : x
2. Step 2: Convert to fraction form
   152,709.32/210,731.72 = 84,725.57/x
3. Step 3: Cross multiply
   152,709.32x = 210,731.72 × 84,725.57
4. Step 4: Simplify right side
   152,709.32x = 17,854,363,616.79
5. Step 5: Solve for x
   x = 17,854,363,616.79/152,709.32
6. Step 6: Final answer
   x = 116,917.32