Finding the Fourth Proportional to 112,791, 155,651.61 and 67,470.90

Step by Step Solution

1. Step 1: Write the proportion equation
   112,791 : 155,651.61 = 67,470.90 : x
2. Step 2: Convert to fraction form
   112,791/155,651.61 = 67,470.90/x
3. Step 3: Cross multiply
   112,791x = 155,651.61 × 67,470.90
4. Step 4: Simplify right side
   112,791x = 10,501,954,213.15
5. Step 5: Solve for x
   x = 10,501,954,213.15/112,791
6. Step 6: Final answer
   x = 93,109.86