Finding the Fourth Proportional to 56,693.70, 78,237.32 and 31,200.06

Step by Step Solution

1. Step 1: Write the proportion equation
   56,693.70 : 78,237.32 = 31,200.06 : x
2. Step 2: Convert to fraction form
   56,693.70/78,237.32 = 31,200.06/x
3. Step 3: Cross multiply
   56,693.70x = 78,237.32 × 31,200.06
4. Step 4: Simplify right side
   56,693.70x = 2,441,009,280.77
5. Step 5: Solve for x
   x = 2,441,009,280.77/56,693.70
6. Step 6: Final answer
   x = 43,056.09