Finding the Fourth Proportional to 112,457.76, 155,191.86 and 64,710.16

Step by Step Solution

1. Step 1: Write the proportion equation
   112,457.76 : 155,191.86 = 64,710.16 : x
2. Step 2: Convert to fraction form
   112,457.76/155,191.86 = 64,710.16/x
3. Step 3: Cross multiply
   112,457.76x = 155,191.86 × 64,710.16
4. Step 4: Simplify right side
   112,457.76x = 10,042,490,091.30
5. Step 5: Solve for x
   x = 10,042,490,091.30/112,457.76
6. Step 6: Final answer
   x = 89,300.11