Finding the Fourth Proportional to 117,700.47, 162,428.28 and 63,985.50

Step by Step Solution

1. Step 1: Write the proportion equation
   117,700.47 : 162,428.28 = 63,985.50 : x
2. Step 2: Convert to fraction form
   117,700.47/162,428.28 = 63,985.50/x
3. Step 3: Cross multiply
   117,700.47x = 162,428.28 × 63,985.50
4. Step 4: Simplify right side
   117,700.47x = 10,393,054,709.94
5. Step 5: Solve for x
   x = 10,393,054,709.94/117,700.47
6. Step 6: Final answer
   x = 88,300.88