Finding the Fourth Proportional to 91,098.06, 136,455.72 and 57,800.98

Step by Step Solution

1. Step 1: Write the proportion equation
   91,098.06 : 136,455.72 = 57,800.98 : x
2. Step 2: Convert to fraction form
   91,098.06/136,455.72 = 57,800.98/x
3. Step 3: Cross multiply
   91,098.06x = 136,455.72 × 57,800.98
4. Step 4: Simplify right side
   91,098.06x = 7,887,274,342.61
5. Step 5: Solve for x
   x = 7,887,274,342.61/91,098.06
6. Step 6: Final answer
   x = 86,580.05