Finding the Fourth Proportional to 91,572.93, 137,113.31 and 58,111.83

Step by Step Solution

1. Step 1: Write the proportion equation
   91,572.93 : 137,113.31 = 58,111.83 : x
2. Step 2: Convert to fraction form
   91,572.93/137,113.31 = 58,111.83/x
3. Step 3: Cross multiply
   91,572.93x = 137,113.31 × 58,111.83
4. Step 4: Simplify right side
   91,572.93x = 7,967,905,070.90
5. Step 5: Solve for x
   x = 7,967,905,070.90/91,572.93
6. Step 6: Final answer
   x = 87,011.58