Finding the Fourth Proportional to 152,402.56, 210,315.20 and 85,334.56

Step by Step Solution

1. Step 1: Write the proportion equation
   152,402.56 : 210,315.20 = 85,334.56 : x
2. Step 2: Convert to fraction form
   152,402.56/210,315.20 = 85,334.56/x
3. Step 3: Cross multiply
   152,402.56x = 210,315.20 × 85,334.56
4. Step 4: Simplify right side
   152,402.56x = 17,947,155,053.31
5. Step 5: Solve for x
   x = 17,947,155,053.31/152,402.56
6. Step 6: Final answer
   x = 117,761.51