Finding the Fourth Proportional to 208,062,667.27, 287,126,475.60 and 115,249,153.84

Step by Step Solution

1. Step 1: Write the proportion equation
   208,062,667.27 : 287,126,475.60 = 115,249,153.84 : x
2. Step 2: Convert to fraction form
   208,062,667.27/287,126,475.60 = 115,249,153.84/x
3. Step 3: Cross multiply
   208,062,667.27x = 287,126,475.60 × 115,249,153.84
4. Step 4: Simplify right side
   208,062,667.27x = 33,091,083,357,961,412
5. Step 5: Solve for x
   x = 33,091,083,357,961,412/208,062,667.27
6. Step 6: Final answer
   x = 159,043,829.40