Finding the Fourth Proportional to 137,647,667.61, 189,958,792.61 and 74,920,733.19

Step by Step Solution

1. Step 1: Write the proportion equation
   137,647,667.61 : 189,958,792.61 = 74,920,733.19 : x
2. Step 2: Convert to fraction form
   137,647,667.61/189,958,792.61 = 74,920,733.19/x
3. Step 3: Cross multiply
   137,647,667.61x = 189,958,792.61 × 74,920,733.19
4. Step 4: Simplify right side
   137,647,667.61x = 14,231,852,018,415,656
5. Step 5: Solve for x
   x = 14,231,852,018,415,656/137,647,667.61
6. Step 6: Final answer
   x = 103,393,339.43