Finding the Fourth Proportional to 68,664.42, 102,970.71 and 31,702.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,664.42 : 102,970.71 = 31,702.50 : x
2. Step 2: Convert to fraction form
   68,664.42/102,970.71 = 31,702.50/x
3. Step 3: Cross multiply
   68,664.42x = 102,970.71 × 31,702.50
4. Step 4: Simplify right side
   68,664.42x = 3,264,428,933.78
5. Step 5: Solve for x
   x = 3,264,428,933.78/68,664.42
6. Step 6: Final answer
   x = 47,541.78