Finding the Fourth Proportional to 112,970.84, 155,899.50 and 65,222.96

Step by Step Solution

1. Step 1: Write the proportion equation
   112,970.84 : 155,899.50 = 65,222.96 : x
2. Step 2: Convert to fraction form
   112,970.84/155,899.50 = 65,222.96/x
3. Step 3: Cross multiply
   112,970.84x = 155,899.50 × 65,222.96
4. Step 4: Simplify right side
   112,970.84x = 10,168,226,852.52
5. Step 5: Solve for x
   x = 10,168,226,852.52/112,970.84
6. Step 6: Final answer
   x = 90,007.54