Finding the Fourth Proportional to 152,915.56, 211,020.06 and 84,928.72

Step by Step Solution

1. Step 1: Write the proportion equation
   152,915.56 : 211,020.06 = 84,928.72 : x
2. Step 2: Convert to fraction form
   152,915.56/211,020.06 = 84,928.72/x
3. Step 3: Cross multiply
   152,915.56x = 211,020.06 × 84,928.72
4. Step 4: Simplify right side
   152,915.56x = 17,921,663,590.12
5. Step 5: Solve for x
   x = 17,921,663,590.12/152,915.56
6. Step 6: Final answer
   x = 117,199.74