Finding the Fourth Proportional to 522,638,123.82, 784,501,975.98 and 231,709,557.12

Step by Step Solution

1. Step 1: Write the proportion equation
   522,638,123.82 : 784,501,975.98 = 231,709,557.12 : x
2. Step 2: Convert to fraction form
   522,638,123.82/784,501,975.98 = 231,709,557.12/x
3. Step 3: Cross multiply
   522,638,123.82x = 784,501,975.98 × 231,709,557.12
4. Step 4: Simplify right side
   522,638,123.82x = 181,776,605,414,090,688
5. Step 5: Solve for x
   x = 181,776,605,414,090,688/522,638,123.82
6. Step 6: Final answer
   x = 347,805,866.30