Finding the Fourth Proportional to 112,495.96, 155,279.06 and 64,781.16

Step by Step Solution

1. Step 1: Write the proportion equation
   112,495.96 : 155,279.06 = 64,781.16 : x
2. Step 2: Convert to fraction form
   112,495.96/155,279.06 = 64,781.16/x
3. Step 3: Cross multiply
   112,495.96x = 155,279.06 × 64,781.16
4. Step 4: Simplify right side
   112,495.96x = 10,059,157,630.51
5. Step 5: Solve for x
   x = 10,059,157,630.51/112,495.96
6. Step 6: Final answer
   x = 89,417.95