Finding the Fourth Proportional to 152,768.96, 210,823.42 and 84,790.30

Step by Step Solution

1. Step 1: Write the proportion equation
   152,768.96 : 210,823.42 = 84,790.30 : x
2. Step 2: Convert to fraction form
   152,768.96/210,823.42 = 84,790.30/x
3. Step 3: Cross multiply
   152,768.96x = 210,823.42 × 84,790.30
4. Step 4: Simplify right side
   152,768.96x = 17,875,781,028.83
5. Step 5: Solve for x
   x = 17,875,781,028.83/152,768.96
6. Step 6: Final answer
   x = 117,011.87