Finding the Fourth Proportional to 152,238.79, 210,068.73 and 87,684.02

Step by Step Solution

1. Step 1: Write the proportion equation
   152,238.79 : 210,068.73 = 87,684.02 : x
2. Step 2: Convert to fraction form
   152,238.79/210,068.73 = 87,684.02/x
3. Step 3: Cross multiply
   152,238.79x = 210,068.73 × 87,684.02
4. Step 4: Simplify right side
   152,238.79x = 18,419,669,672.35
5. Step 5: Solve for x
   x = 18,419,669,672.35/152,238.79
6. Step 6: Final answer
   x = 120,991.96