Finding the Fourth Proportional to 86,434.50, 119,279.61 and 46,690.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,434.50 : 119,279.61 = 46,690.50 : x
2. Step 2: Convert to fraction form
   86,434.50/119,279.61 = 46,690.50/x
3. Step 3: Cross multiply
   86,434.50x = 119,279.61 × 46,690.50
4. Step 4: Simplify right side
   86,434.50x = 5,569,224,630.71
5. Step 5: Solve for x
   x = 5,569,224,630.71/86,434.50
6. Step 6: Final answer
   x = 64,432.89