Finding the Fourth Proportional to 118,905.10, 164,088.98 and 65,188.96

Step by Step Solution

1. Step 1: Write the proportion equation
   118,905.10 : 164,088.98 = 65,188.96 : x
2. Step 2: Convert to fraction form
   118,905.10/164,088.98 = 65,188.96/x
3. Step 3: Cross multiply
   118,905.10x = 164,088.98 × 65,188.96
4. Step 4: Simplify right side
   118,905.10x = 10,696,789,953.66
5. Step 5: Solve for x
   x = 10,696,789,953.66/118,905.10
6. Step 6: Final answer
   x = 89,960.73