Finding the Fourth Proportional to 56,773.12, 78,347.52 and 31,624

Step by Step Solution

1. Step 1: Write the proportion equation
   56,773.12 : 78,347.52 = 31,624 : x
2. Step 2: Convert to fraction form
   56,773.12/78,347.52 = 31,624/x
3. Step 3: Cross multiply
   56,773.12x = 78,347.52 × 31,624
4. Step 4: Simplify right side
   56,773.12x = 2,477,661,972.48
5. Step 5: Solve for x
   x = 2,477,661,972.48/56,773.12
6. Step 6: Final answer
   x = 43,641.46