Finding the Fourth Proportional to 99,643, 137,500.44 and 56,042.08

Step by Step Solution

1. Step 1: Write the proportion equation
   99,643 : 137,500.44 = 56,042.08 : x
2. Step 2: Convert to fraction form
   99,643/137,500.44 = 56,042.08/x
3. Step 3: Cross multiply
   99,643x = 137,500.44 × 56,042.08
4. Step 4: Simplify right side
   99,643x = 7,705,810,658.52
5. Step 5: Solve for x
   x = 7,705,810,658.52/99,643
6. Step 6: Final answer
   x = 77,334.19