Finding the Fourth Proportional to 99,941.18, 137,943.32 and 56,946.02

Step by Step Solution

1. Step 1: Write the proportion equation
   99,941.18 : 137,943.32 = 56,946.02 : x
2. Step 2: Convert to fraction form
   99,941.18/137,943.32 = 56,946.02/x
3. Step 3: Cross multiply
   99,941.18x = 137,943.32 × 56,946.02
4. Step 4: Simplify right side
   99,941.18x = 7,855,323,059.59
5. Step 5: Solve for x
   x = 7,855,323,059.59/99,941.18
6. Step 6: Final answer
   x = 78,599.46