Finding the Fourth Proportional to 118,191.12, 163,098.54 and 64,475.16

Step by Step Solution

1. Step 1: Write the proportion equation
   118,191.12 : 163,098.54 = 64,475.16 : x
2. Step 2: Convert to fraction form
   118,191.12/163,098.54 = 64,475.16/x
3. Step 3: Cross multiply
   118,191.12x = 163,098.54 × 64,475.16
4. Step 4: Simplify right side
   118,191.12x = 10,515,804,462.27
5. Step 5: Solve for x
   x = 10,515,804,462.27/118,191.12
6. Step 6: Final answer
   x = 88,972.88