Finding the Fourth Proportional to 156,089.58, 215,401.86 and 84,468.30

Step by Step Solution

1. Step 1: Write the proportion equation
   156,089.58 : 215,401.86 = 84,468.30 : x
2. Step 2: Convert to fraction form
   156,089.58/215,401.86 = 84,468.30/x
3. Step 3: Cross multiply
   156,089.58x = 215,401.86 × 84,468.30
4. Step 4: Simplify right side
   156,089.58x = 18,194,628,931.04
5. Step 5: Solve for x
   x = 18,194,628,931.04/156,089.58
6. Step 6: Final answer
   x = 116,565.30