Finding the Fourth Proportional to 118,627.98, 163,699.56 and 64,902.30

Step by Step Solution

1. Step 1: Write the proportion equation
   118,627.98 : 163,699.56 = 64,902.30 : x
2. Step 2: Convert to fraction form
   118,627.98/163,699.56 = 64,902.30/x
3. Step 3: Cross multiply
   118,627.98x = 163,699.56 × 64,902.30
4. Step 4: Simplify right side
   118,627.98x = 10,624,477,952.99
5. Step 5: Solve for x
   x = 10,624,477,952.99/118,627.98
6. Step 6: Final answer
   x = 89,561.32