Finding the Fourth Proportional to 112,392.16, 155,094.96 and 64,646.31

Step by Step Solution

1. Step 1: Write the proportion equation
   112,392.16 : 155,094.96 = 64,646.31 : x
2. Step 2: Convert to fraction form
   112,392.16/155,094.96 = 64,646.31/x
3. Step 3: Cross multiply
   112,392.16x = 155,094.96 × 64,646.31
4. Step 4: Simplify right side
   112,392.16x = 10,026,316,863.60
5. Step 5: Solve for x
   x = 10,026,316,863.60/112,392.16
6. Step 6: Final answer
   x = 89,208.33