Finding the Fourth Proportional to 118,429.30, 163,430.45 and 64,713.08

Step by Step Solution

1. Step 1: Write the proportion equation
   118,429.30 : 163,430.45 = 64,713.08 : x
2. Step 2: Convert to fraction form
   118,429.30/163,430.45 = 64,713.08/x
3. Step 3: Cross multiply
   118,429.30x = 163,430.45 × 64,713.08
4. Step 4: Simplify right side
   118,429.30x = 10,576,087,538.49
5. Step 5: Solve for x
   x = 10,576,087,538.49/118,429.30
6. Step 6: Final answer
   x = 89,302.96