Finding the Fourth Proportional to 56,773.50, 78,349.86 and 31,623

Step by Step Solution

1. Step 1: Write the proportion equation
   56,773.50 : 78,349.86 = 31,623 : x
2. Step 2: Convert to fraction form
   56,773.50/78,349.86 = 31,623/x
3. Step 3: Cross multiply
   56,773.50x = 78,349.86 × 31,623
4. Step 4: Simplify right side
   56,773.50x = 2,477,657,622.78
5. Step 5: Solve for x
   x = 2,477,657,622.78/56,773.50
6. Step 6: Final answer
   x = 43,641.09