Finding the Fourth Proportional to 130,896,932.38, 180,638,313.69 and 72,158,308.72

Step by Step Solution

1. Step 1: Write the proportion equation
   130,896,932.38 : 180,638,313.69 = 72,158,308.72 : x
2. Step 2: Convert to fraction form
   130,896,932.38/180,638,313.69 = 72,158,308.72/x
3. Step 3: Cross multiply
   130,896,932.38x = 180,638,313.69 × 72,158,308.72
4. Step 4: Simplify right side
   130,896,932.38x = 13,034,555,205,903,222
5. Step 5: Solve for x
   x = 13,034,555,205,903,222/130,896,932.38
6. Step 6: Final answer
   x = 99,578,767.58