Finding the Fourth Proportional to 156,143.59, 234,071.87 and 56,279.34

Step by Step Solution

1. Step 1: Write the proportion equation
   156,143.59 : 234,071.87 = 56,279.34 : x
2. Step 2: Convert to fraction form
   156,143.59/234,071.87 = 56,279.34/x
3. Step 3: Cross multiply
   156,143.59x = 234,071.87 × 56,279.34
4. Step 4: Simplify right side
   156,143.59x = 13,173,410,074.77
5. Step 5: Solve for x
   x = 13,173,410,074.77/156,143.59
6. Step 6: Final answer
   x = 84,367.28