Finding the Fourth Proportional to 118,783.71, 163,921.56 and 65,070.66

Step by Step Solution

1. Step 1: Write the proportion equation
   118,783.71 : 163,921.56 = 65,070.66 : x
2. Step 2: Convert to fraction form
   118,783.71/163,921.56 = 65,070.66/x
3. Step 3: Cross multiply
   118,783.71x = 163,921.56 × 65,070.66
4. Step 4: Simplify right side
   118,783.71x = 10,666,484,097.43
5. Step 5: Solve for x
   x = 10,666,484,097.43/118,783.71
6. Step 6: Final answer
   x = 89,797.53