Finding the Fourth Proportional to 92,061.23, 137,326.93 and 90,538.83

Step by Step Solution

1. Step 1: Write the proportion equation
   92,061.23 : 137,326.93 = 90,538.83 : x
2. Step 2: Convert to fraction form
   92,061.23/137,326.93 = 90,538.83/x
3. Step 3: Cross multiply
   92,061.23x = 137,326.93 × 90,538.83
4. Step 4: Simplify right side
   92,061.23x = 12,433,419,343.34
5. Step 5: Solve for x
   x = 12,433,419,343.34/92,061.23
6. Step 6: Final answer
   x = 135,055.98