Finding the Fourth Proportional to 156,521.73, 215,994.15 and 84,899.37

Step by Step Solution

1. Step 1: Write the proportion equation
   156,521.73 : 215,994.15 = 84,899.37 : x
2. Step 2: Convert to fraction form
   156,521.73/215,994.15 = 84,899.37/x
3. Step 3: Cross multiply
   156,521.73x = 215,994.15 × 84,899.37
4. Step 4: Simplify right side
   156,521.73x = 18,337,767,258.69
5. Step 5: Solve for x
   x = 18,337,767,258.69/156,521.73
6. Step 6: Final answer
   x = 117,157.96