Finding the Fourth Proportional to 113,456,213.61, 170,055,225.16 and 69,042,542.72

Step by Step Solution

1. Step 1: Write the proportion equation
   113,456,213.61 : 170,055,225.16 = 69,042,542.72 : x
2. Step 2: Convert to fraction form
   113,456,213.61/170,055,225.16 = 69,042,542.72/x
3. Step 3: Cross multiply
   113,456,213.61x = 170,055,225.16 × 69,042,542.72
4. Step 4: Simplify right side
   113,456,213.61x = 11,741,045,146,845,636
5. Step 5: Solve for x
   x = 11,741,045,146,845,636/113,456,213.61
6. Step 6: Final answer
   x = 103,485,254.56