Finding the Fourth Proportional to 118,646.72, 163,730.94 and 64,930.76

Step by Step Solution

1. Step 1: Write the proportion equation
   118,646.72 : 163,730.94 = 64,930.76 : x
2. Step 2: Convert to fraction form
   118,646.72/163,730.94 = 64,930.76/x
3. Step 3: Cross multiply
   118,646.72x = 163,730.94 × 64,930.76
4. Step 4: Simplify right side
   118,646.72x = 10,631,174,369.71
5. Step 5: Solve for x
   x = 10,631,174,369.71/118,646.72
6. Step 6: Final answer
   x = 89,603.61