Finding the Fourth Proportional to 99,354,772.55, 137,109,592.28 and 55,300,826.32

Step by Step Solution

1. Step 1: Write the proportion equation
   99,354,772.55 : 137,109,592.28 = 55,300,826.32 : x
2. Step 2: Convert to fraction form
   99,354,772.55/137,109,592.28 = 55,300,826.32/x
3. Step 3: Cross multiply
   99,354,772.55x = 137,109,592.28 × 55,300,826.32
4. Step 4: Simplify right side
   99,354,772.55x = 7,582,273,749,277,771
5. Step 5: Solve for x
   x = 7,582,273,749,277,771/99,354,772.55
6. Step 6: Final answer
   x = 76,315,143.75