Finding the Fourth Proportional to 112,688.96, 155,510.50 and 64,941.88

Step by Step Solution

1. Step 1: Write the proportion equation
   112,688.96 : 155,510.50 = 64,941.88 : x
2. Step 2: Convert to fraction form
   112,688.96/155,510.50 = 64,941.88/x
3. Step 3: Cross multiply
   112,688.96x = 155,510.50 × 64,941.88
4. Step 4: Simplify right side
   112,688.96x = 10,099,144,229.74
5. Step 5: Solve for x
   x = 10,099,144,229.74/112,688.96
6. Step 6: Final answer
   x = 89,619.64