Finding the Fourth Proportional to 105,167.88, 157,761.74 and 81,501.93

Step by Step Solution

1. Step 1: Write the proportion equation
   105,167.88 : 157,761.74 = 81,501.93 : x
2. Step 2: Convert to fraction form
   105,167.88/157,761.74 = 81,501.93/x
3. Step 3: Cross multiply
   105,167.88x = 157,761.74 × 81,501.93
4. Step 4: Simplify right side
   105,167.88x = 12,857,886,779.89
5. Step 5: Solve for x
   x = 12,857,886,779.89/105,167.88
6. Step 6: Final answer
   x = 122,260.59