Finding the Fourth Proportional to 112,746.96, 155,590.56 and 64,999.98

Step by Step Solution

1. Step 1: Write the proportion equation
   112,746.96 : 155,590.56 = 64,999.98 : x
2. Step 2: Convert to fraction form
   112,746.96/155,590.56 = 64,999.98/x
3. Step 3: Cross multiply
   112,746.96x = 155,590.56 × 64,999.98
4. Step 4: Simplify right side
   112,746.96x = 10,113,383,288.19
5. Step 5: Solve for x
   x = 10,113,383,288.19/112,746.96
6. Step 6: Final answer
   x = 89,699.83