Finding the Fourth Proportional to 139,026,445.61, 191,865,463.00 and 77,146,784.17

Step by Step Solution

1. Step 1: Write the proportion equation
   139,026,445.61 : 191,865,463.00 = 77,146,784.17 : x
2. Step 2: Convert to fraction form
   139,026,445.61/191,865,463.00 = 77,146,784.17/x
3. Step 3: Cross multiply
   139,026,445.61x = 191,865,463.00 × 77,146,784.17
4. Step 4: Simplify right side
   139,026,445.61x = 14,801,803,463,065,592
5. Step 5: Solve for x
   x = 14,801,803,463,065,592/139,026,445.61
6. Step 6: Final answer
   x = 106,467,538.59