Finding the Fourth Proportional to 116,746.32, 161,111.88 and 66,450

Step by Step Solution

1. Step 1: Write the proportion equation
   116,746.32 : 161,111.88 = 66,450 : x
2. Step 2: Convert to fraction form
   116,746.32/161,111.88 = 66,450/x
3. Step 3: Cross multiply
   116,746.32x = 161,111.88 × 66,450
4. Step 4: Simplify right side
   116,746.32x = 10,705,884,426
5. Step 5: Solve for x
   x = 10,705,884,426/116,746.32
6. Step 6: Final answer
   x = 91,702.11