Finding the Fourth Proportional to 91,790.30, 137,726.72 and 49,620.98

Step by Step Solution

1. Step 1: Write the proportion equation
   91,790.30 : 137,726.72 = 49,620.98 : x
2. Step 2: Convert to fraction form
   91,790.30/137,726.72 = 49,620.98/x
3. Step 3: Cross multiply
   91,790.30x = 137,726.72 × 49,620.98
4. Step 4: Simplify right side
   91,790.30x = 6,834,134,818.59
5. Step 5: Solve for x
   x = 6,834,134,818.59/91,790.30
6. Step 6: Final answer
   x = 74,453.78