Finding the Fourth Proportional to 112,518.72, 155,294.01 and 64,761.93

Step by Step Solution

1. Step 1: Write the proportion equation
   112,518.72 : 155,294.01 = 64,761.93 : x
2. Step 2: Convert to fraction form
   112,518.72/155,294.01 = 64,761.93/x
3. Step 3: Cross multiply
   112,518.72x = 155,294.01 × 64,761.93
4. Step 4: Simplify right side
   112,518.72x = 10,057,139,805.04
5. Step 5: Solve for x
   x = 10,057,139,805.04/112,518.72
6. Step 6: Final answer
   x = 89,381.93