Finding the Fourth Proportional to 47,316.88, 70,766.10 and 42,088.60

Step by Step Solution

1. Step 1: Write the proportion equation
   47,316.88 : 70,766.10 = 42,088.60 : x
2. Step 2: Convert to fraction form
   47,316.88/70,766.10 = 42,088.60/x
3. Step 3: Cross multiply
   47,316.88x = 70,766.10 × 42,088.60
4. Step 4: Simplify right side
   47,316.88x = 2,978,446,076.46
5. Step 5: Solve for x
   x = 2,978,446,076.46/47,316.88
6. Step 6: Final answer
   x = 62,946.80