Finding the Fourth Proportional to 91,276.60, 136,927.86 and 28,101.98

Step by Step Solution

1. Step 1: Write the proportion equation
   91,276.60 : 136,927.86 = 28,101.98 : x
2. Step 2: Convert to fraction form
   91,276.60/136,927.86 = 28,101.98/x
3. Step 3: Cross multiply
   91,276.60x = 136,927.86 × 28,101.98
4. Step 4: Simplify right side
   91,276.60x = 3,847,943,983.16
5. Step 5: Solve for x
   x = 3,847,943,983.16/91,276.60
6. Step 6: Final answer
   x = 42,156.96