Finding the Fourth Proportional to 91,380.72, 137,071.32 and 56,246.76

Step by Step Solution

1. Step 1: Write the proportion equation
   91,380.72 : 137,071.32 = 56,246.76 : x
2. Step 2: Convert to fraction form
   91,380.72/137,071.32 = 56,246.76/x
3. Step 3: Cross multiply
   91,380.72x = 137,071.32 × 56,246.76
4. Step 4: Simplify right side
   91,380.72x = 7,709,817,638.92
5. Step 5: Solve for x
   x = 7,709,817,638.92/91,380.72
6. Step 6: Final answer
   x = 84,370.29