Finding the Fourth Proportional to 56,529.98, 78,007.47 and 31,377.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,529.98 : 78,007.47 = 31,377.50 : x
2. Step 2: Convert to fraction form
   56,529.98/78,007.47 = 31,377.50/x
3. Step 3: Cross multiply
   56,529.98x = 78,007.47 × 31,377.50
4. Step 4: Simplify right side
   56,529.98x = 2,447,679,389.93
5. Step 5: Solve for x
   x = 2,447,679,389.93/56,529.98
6. Step 6: Final answer
   x = 43,298.78