Finding the Fourth Proportional to 64,938.78, 97,281.88 and 42,684.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,938.78 : 97,281.88 = 42,684.50 : x
2. Step 2: Convert to fraction form
   64,938.78/97,281.88 = 42,684.50/x
3. Step 3: Cross multiply
   64,938.78x = 97,281.88 × 42,684.50
4. Step 4: Simplify right side
   64,938.78x = 4,152,428,543.35
5. Step 5: Solve for x
   x = 4,152,428,543.35/64,938.78
6. Step 6: Final answer
   x = 63,943.74