Finding the Fourth Proportional to 112,410.18, 155,157.32 and 64,678.91

Step by Step Solution

1. Step 1: Write the proportion equation
   112,410.18 : 155,157.32 = 64,678.91 : x
2. Step 2: Convert to fraction form
   112,410.18/155,157.32 = 64,678.91/x
3. Step 3: Cross multiply
   112,410.18x = 155,157.32 × 64,678.91
4. Step 4: Simplify right side
   112,410.18x = 10,035,405,722.03
5. Step 5: Solve for x
   x = 10,035,405,722.03/112,410.18
6. Step 6: Final answer
   x = 89,274.88