Finding the Fourth Proportional to 74,931.60, 111,850.78 and 65,473

Step by Step Solution

1. Step 1: Write the proportion equation
   74,931.60 : 111,850.78 = 65,473 : x
2. Step 2: Convert to fraction form
   74,931.60/111,850.78 = 65,473/x
3. Step 3: Cross multiply
   74,931.60x = 111,850.78 × 65,473
4. Step 4: Simplify right side
   74,931.60x = 7,323,206,118.94
5. Step 5: Solve for x
   x = 7,323,206,118.94/74,931.60
6. Step 6: Final answer
   x = 97,731.88