Finding the Fourth Proportional to 151,161,721.34, 208,602,663.89 and 85,082,181.32

Step by Step Solution

1. Step 1: Write the proportion equation
   151,161,721.34 : 208,602,663.89 = 85,082,181.32 : x
2. Step 2: Convert to fraction form
   151,161,721.34/208,602,663.89 = 85,082,181.32/x
3. Step 3: Cross multiply
   151,161,721.34x = 208,602,663.89 × 85,082,181.32
4. Step 4: Simplify right side
   151,161,721.34x = 17,748,369,671,455,572
5. Step 5: Solve for x
   x = 17,748,369,671,455,572/151,161,721.34
6. Step 6: Final answer
   x = 117,413,122.28