Finding the Fourth Proportional to 56,142.80, 83,803.12 and 49,499.96

Step by Step Solution

1. Step 1: Write the proportion equation
   56,142.80 : 83,803.12 = 49,499.96 : x
2. Step 2: Convert to fraction form
   56,142.80/83,803.12 = 49,499.96/x
3. Step 3: Cross multiply
   56,142.80x = 83,803.12 × 49,499.96
4. Step 4: Simplify right side
   56,142.80x = 4,148,251,087.88
5. Step 5: Solve for x
   x = 4,148,251,087.88/56,142.80
6. Step 6: Final answer
   x = 73,887.50