Finding the Fourth Proportional to 99,357.01, 137,109.74 and 56,340.43

Step by Step Solution

1. Step 1: Write the proportion equation
   99,357.01 : 137,109.74 = 56,340.43 : x
2. Step 2: Convert to fraction form
   99,357.01/137,109.74 = 56,340.43/x
3. Step 3: Cross multiply
   99,357.01x = 137,109.74 × 56,340.43
4. Step 4: Simplify right side
   99,357.01x = 7,724,821,084.31
5. Step 5: Solve for x
   x = 7,724,821,084.31/99,357.01
6. Step 6: Final answer
   x = 77,748.13