Finding the Fourth Proportional to 56,427.62, 84,700.96 and 55,156.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,427.62 : 84,700.96 = 55,156.72 : x
2. Step 2: Convert to fraction form
   56,427.62/84,700.96 = 55,156.72/x
3. Step 3: Cross multiply
   56,427.62x = 84,700.96 × 55,156.72
4. Step 4: Simplify right side
   56,427.62x = 4,671,827,134.45
5. Step 5: Solve for x
   x = 4,671,827,134.45/56,427.62
6. Step 6: Final answer
   x = 82,793.27