Finding the Fourth Proportional to 207,200,111.10, 310,912,141.06 and 92,202,402.30

Step by Step Solution

1. Step 1: Write the proportion equation
   207,200,111.10 : 310,912,141.06 = 92,202,402.30 : x
2. Step 2: Convert to fraction form
   207,200,111.10/310,912,141.06 = 92,202,402.30/x
3. Step 3: Cross multiply
   207,200,111.10x = 310,912,141.06 × 92,202,402.30
4. Step 4: Simplify right side
   207,200,111.10x = 28,666,846,309,968,468
5. Step 5: Solve for x
   x = 28,666,846,309,968,468/207,200,111.10
6. Step 6: Final answer
   x = 138,353,431.17